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Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 122 (from laksa160)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa122.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.merriam-webster.com/dictionary/Brownian%20motion\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.merriam-webster.com/dictionary/Brownian%20motion\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion","crawl_time":1774452762,"first_indexed_time":1481787218,"http_code":200,"src_unparsed":"com,merriam-webster!www,\/dictionary\/Brownian%20motion s443","src_root_hash":"12021194709005532322","history_drop_reason":null,"meta_title":"BROWNIAN MOTION Definition & Meaning - Merriam-Webster","meta_descriptions":["The meaning of BROWNIAN MOTION is a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium —called also Brownian movement."],"attrs_boilerpipe_text":":\na random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium\ncalled also\nBrownian movement\nExamples of\nBrownian motion\nin a Sentence\nRecent Examples on the Web\nExamples are automatically compiled from online sources to \n                    show current usage.\nRead More\nOpinions expressed in the examples do not represent those of Merriam-Webster or its editors.\nSend us feedback\n.\nWhat looks like\nBrownian motion\n, random and chaotic, is in fact as efficient a system of transportation as there is.\n—\nBryan C. Donohue,\nBaltimore Sun\n, 17 Apr. 2024\nBut another is that at galactic scales, the acceleration due to gravity can vary by a small but random amount, as if spacetime were eliciting some kind of\nBrownian motion\non the masses within it.\n—\nThe Physics Arxiv Blog,\nDiscover Magazine\n, 11 Mar. 2024\nBut there’s another kind of movement available in liquids that has rarely been considered for this purpose—molecular thermal motion or\nBrownian motion\n.\n—\nIEEE Spectrum\n, 27 Oct. 2023\nBrown noise gets its name not from the color, but because it’s produced by a type of random movement known as\nBrownian motion\n.\n—\nSamantha Vincenty,\nSELF\n, 12 Aug. 2022\nWord History\nEtymology\nRobert\nBrown\n†1858 Scottish botanist\nFirst Known Use\n1849, in the meaning defined\nabove\nTime Traveler\nThe first known use of\nBrownian motion\nwas\n                                        in 1849\nBrowse Nearby Words\nCite this Entry\nStyle\n“Brownian motion.”\nMerriam-Webster.com Dictionary\n, Merriam-Webster, https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion. Accessed 25 Mar. 2026.\nMore from Merriam-Webster on\nBrownian motion\nSubscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!\nMerriam-Webster unabridged\nMore from Merriam-Webster\nTop Lookups","attrs_markdown":"[Chatbot](https:\/\/www.merriam-webster.com\/chatbot)\n\n- [Chatbot](https:\/\/www.merriam-webster.com\/chatbot)\n- [Games](https:\/\/www.merriam-webster.com\/games)\n- [Word of the Day](https:\/\/www.merriam-webster.com\/word-of-the-day)\n- [Grammar](https:\/\/www.merriam-webster.com\/grammar)\n- [Word Finder](https:\/\/www.merriam-webster.com\/wordfinder)\n- [Slang](https:\/\/www.merriam-webster.com\/slang)\n- New [Newsletters](https:\/\/www.merriam-webster.com\/newsletters)\n- [Wordplay](https:\/\/www.merriam-webster.com\/wordplay)\n- [Rhymes](https:\/\/www.merriam-webster.com\/rhymes)\n- [Thesaurus](https:\/\/www.merriam-webster.com\/thesaurus)\n- [Join MWU](https:\/\/unabridged.merriam-webster.com\/check-redirect-premium?utm_source=mw&utm_medium=global-nav-join&utm_campaign=evergreen)\n- More\n  - 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[My Words](https:\/\/www.merriam-webster.com\/saved-words)\n    - [Recents](https:\/\/www.merriam-webster.com\/recents)\n    - [Account](https:\/\/www.merriam-webster.com\/settings)\n    - [Log Out](https:\/\/www.merriam-webster.com\/logout)\n\nEst. 1828\n\n[Dictionary](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion)\n\n- [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Definition](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#dictionary-entry-1)\n- [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Definition](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#dictionary-entry-1)\n- [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Example Sentences](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#examples)\n- [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Word History](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#word-history)\n- [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Rhymes](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#related-rhymes)\n- [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Entries Near](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#nearby-entries)\n\n- - [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Cite this EntryCitation](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#citations)\n  - [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Kids DefinitionKids](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#kidsdictionary)\n  - [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) Medical DefinitionMedical](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#medicalDictionary)\n  - [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/sidebar-nav-item-icon.svg) More from M-W](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#more-from-mw)\n  [![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/redesign\/dots.svg) Show more![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/redesign\/show-more-arrow.svg)](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion)\n- [More from M-W![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/redesign\/show-more-arrow.svg)](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion)\n  - [Citation](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#citations)\n  - [Kids](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#kidsdictionary)\n  - [Medical](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#medicalDictionary)\n  - [More from M-W](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#more-from-mw)\n\n- Save Word ![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/redesign\/save-word-flag-icon.svg)\n  - To save this word, you'll need to log in.\n    [Log In](https:\/\/www.merriam-webster.com\/login)\n\n# Brownian motion\n## [noun](https:\/\/www.merriam-webster.com\/dictionary\/noun)\n\nBrown·ian motion\n\n[ˈbrau̇-nē-ən-](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion?pronunciation&lang=en_us&dir=b&file=browni01 \"How to pronounce Brownian motion (audio)\")\n\n**:** a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium\n\ncalled also Brownian movement\n\n## Examples of *Brownian motion* in a Sentence\nRecent Examples on the Web\n\nExamples are automatically compiled from online sources to show current usage.   [Read More](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion)  Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. [Send us feedback](https:\/\/docs.google.com\/forms\/d\/1GAQr3Kn1cURCVHUA82hAga1Wv8DCH0IuqDLRUrOpN7M\/viewform?ts=63f4f653&entry.1515682415=https:\/\/www.merriam-webster.com\/dictionary%2FBrownian%20motion).\n\nWhat looks like *Brownian motion*, random and chaotic, is in fact as efficient a system of transportation as there is.\n\n—\n\nBryan C. Donohue, *Baltimore Sun*, 17 Apr. 2024\n\nBut another is that at galactic scales, the acceleration due to gravity can vary by a small but random amount, as if spacetime were eliciting some kind of *Brownian motion* on the masses within it.\n\n—\n\nThe Physics Arxiv Blog, *Discover Magazine*, 11 Mar. 2024\n\nBut there’s another kind of movement available in liquids that has rarely been considered for this purpose—molecular thermal motion or *Brownian motion*.\n\n—\n\n*IEEE Spectrum*, 27 Oct. 2023\n\nBrown noise gets its name not from the color, but because it’s produced by a type of random movement known as *Brownian motion*.\n\n—\n\nSamantha Vincenty, *SELF*, 12 Aug. 2022\n\n## Word History\nEtymology\n\nRobert *Brown* †1858 Scottish botanist\n\nFirst Known Use\n\n1849, in the meaning defined [above](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#h1)\n\nTime Traveler\n\nThe first known use of *Brownian motion* was in 1849\n\n[See more words from the same year](https:\/\/www.merriam-webster.com\/time-traveler\/1849?src=defrecirc-timetraveler-etycard)\n\n## Rhymes for *Brownian motion*\n- [locomotion](https:\/\/www.merriam-webster.com\/dictionary\/locomotion)\n- [commotion](https:\/\/www.merriam-webster.com\/dictionary\/commotion)\n- [demotion](https:\/\/www.merriam-webster.com\/dictionary\/demotion)\n- [devotion](https:\/\/www.merriam-webster.com\/dictionary\/devotion)\n- [emotion](https:\/\/www.merriam-webster.com\/dictionary\/emotion)\n- [laotian](https:\/\/www.merriam-webster.com\/dictionary\/laotian)\n- [promotion](https:\/\/www.merriam-webster.com\/dictionary\/promotion)\n- [lotion](https:\/\/www.merriam-webster.com\/dictionary\/lotion)\n- [notion](https:\/\/www.merriam-webster.com\/dictionary\/notion)\n- [ocean](https:\/\/www.merriam-webster.com\/dictionary\/ocean)\n- [potion](https:\/\/www.merriam-webster.com\/dictionary\/potion)\n\n[See All Rhymes for *Brownian motion*](https:\/\/www.merriam-webster.com\/rhymes\/perfect\/brownian%20motion)\n\n## Browse Nearby Words\n[brown hyena](https:\/\/www.merriam-webster.com\/dictionary\/brown%20hyena)\n\nBrownian motion\n\n[brownie](https:\/\/www.merriam-webster.com\/dictionary\/brownie)\n\n[See all Nearby Words](https:\/\/www.merriam-webster.com\/browse\/dictionary\/b\/62)\n\n## Cite this Entry\nStyle\n\n“Brownian motion.” *Merriam-Webster.com Dictionary*, Merriam-Webster, https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion. Accessed 25 Mar. 2026.\n\n[![](https:\/\/www.merriam-webster.com\/dist-cross-dungarees\/2026-03-24--19-00-01-2qnry\/images\/svg\/redesign\/copy-icon.svg)Copy Citation](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion)\n\n## Kids Definition\nBrownian motion\n\nnoun\n\nBrown·ian motion\n\n[ˌbrau̇-nē-ən-](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion?pronunciation&lang=en_us&dir=b&file=browni01 \"How to pronounce Brownian motion (audio)\")\n\n**:** a random movement of microscopic particles in liquids or gases that results from collisions with molecules of the fluid surrounding the particles\n\ncalled also Brownian movement\n\nEtymology\n\nnamed for Robert *Brown* 1773–1858 Scottish scientist\n\n## Medical Definition\nBrownian motion\n\nnoun\n\nBrown·ian motion\n\n[ˌbrau̇-nē-ən-](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion?pronunciation&lang=en_us&dir=b&file=browni01 \"How to pronounce Brownian motion (audio)\")\n\n**:** a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the fluid surrounding the particles\n\ncalled also Brownian movement\n\n## More from Merriam-Webster on *Brownian motion*\nBritannica.com: [Encyclopedia article about *Brownian motion*](https:\/\/www.britannica.com\/EBchecked\/topic\/81815\/Brownian-motion)\n\nLove words? Need even more definitions?\n\nSubscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free\\!\n\n[Merriam-Webster unabridged](https:\/\/unabridged.merriam-webster.com\/check-redirect-premium?utm_source=mw&utm_medium=inline-def&utm_campaign=evergreen&headword=Brownian%20motion)\n\n## More from Merriam-Webster\nTop Lookups\n\n- 1\n  existential\n- 2\n  happy\n- 3\n  enigma\n- 4\n  culture\n- 5\n  didactic\n- 6\n  pedantic\n- 7\n  love\n\n#### [Word of the Day](https:\/\/www.merriam-webster.com\/word-of-the-day)\n#### [undulate](https:\/\/www.merriam-webster.com\/word-of-the-day)\n[See Definitions and Examples](https:\/\/www.merriam-webster.com\/word-of-the-day) »\n\nGet Word of the Day daily email\\!\n\n## Popular in Grammar & Usage\n[See More](https:\/\/www.merriam-webster.com\/grammar)\n\n[Are You Misusing These 10 Common Words?](https:\/\/www.merriam-webster.com\/grammar\/words-that-do-not-mean-what-you-think-they-mean)\n\n[5 Verbal Slip Ups and Language Mistakes](https:\/\/www.merriam-webster.com\/grammar\/mondegreens-eggcorns-malapropisms-spoonerism-freudian-slip)\n\n[Is that lie 'bald-faced' or 'bold-faced'?](https:\/\/www.merriam-webster.com\/grammar\/is-that-lie-bald-faced-or-bold-faced-or-barefaced)\n\n[The Difference Between 'i.e.' and 'e.g.'](https:\/\/www.merriam-webster.com\/grammar\/ie-vs-eg-abbreviation-meaning-usage-difference)\n\n[Why is '-ed' sometimes pronounced at the end of a word?](https:\/\/www.merriam-webster.com\/grammar\/why-do-we-pronounce-ed-at-the-end-of-a-word)\n\n[See More](https:\/\/www.merriam-webster.com\/grammar)\n\n## Popular in Wordplay\n[See More](https:\/\/www.merriam-webster.com\/wordplay)\n\n[12 Words for Signs of Spring](https:\/\/www.merriam-webster.com\/wordplay\/signs-of-spring)\n\n[The Opposite of Déjà Vu](https:\/\/www.merriam-webster.com\/wordplay\/the-opposite-of-deja-vu)\n\n[Why do we call it a 'pipe dream'?](https:\/\/www.merriam-webster.com\/wordplay\/why-do-we-call-it-a-pipe-dream)\n\n[Why do we say 'fly off the handle'?](https:\/\/www.merriam-webster.com\/wordplay\/why-do-we-say-fly-off-the-handle)\n\n[Why do we call it a 'flea market'?](https:\/\/www.merriam-webster.com\/wordplay\/why-do-we-call-it-a-flea-market)\n\n[See More](https:\/\/www.merriam-webster.com\/wordplay)\n\n## Popular\n[See More](https:\/\/www.merriam-webster.com\/wordplay)\n\n[Are You Misusing These 10 Common Words?](https:\/\/www.merriam-webster.com\/grammar\/words-that-do-not-mean-what-you-think-they-mean)\n\n[12 Words for Signs of Spring](https:\/\/www.merriam-webster.com\/wordplay\/signs-of-spring)\n\n[The Opposite of Déjà Vu](https:\/\/www.merriam-webster.com\/wordplay\/the-opposite-of-deja-vu)\n\n[See More](https:\/\/www.merriam-webster.com\/wordplay)\n\n## Games & Quizzes\n[See All](https:\/\/www.merriam-webster.com\/games)\n\n[![Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.](https:\/\/merriam-webster.com\/assets\/mw\/static\/images\/games\/external\/quordle\/485x364@1x.jpg) Quordle Can you solve 4 words at once? Play](https:\/\/www.merriam-webster.com\/games\/quordle\/)\n\n[![Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.](https:\/\/merriam-webster.com\/assets\/mw\/static\/images\/games\/iframe\/blossom-word-game\/485x364@1x.jpg) Blossom Pick the best words! Play](https:\/\/www.merriam-webster.com\/games\/blossom-word-game)\n\n[![Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?](https:\/\/merriam-webster.com\/assets\/mw\/static\/images\/games\/iframe\/missing-letter\/485x364@1x.jpg) The Missing Letter A daily crossword with a twist Play](https:\/\/www.merriam-webster.com\/games\/missing-letter)\n\n[![back-of-head-mortarboard](https:\/\/merriam-webster.com\/assets\/mw\/images\/quiz\/quiz-global-footer-recirc\/back-of-head-mortarboard-10064-e628383268d81f98a3a47ca0f9d93478@1x.jpg) Quiz: Name That Hat! Time to put on your thinking cap. Take the quiz](https:\/\/www.merriam-webster.com\/games\/name-that-hat)\n\n[See All](https:\/\/www.merriam-webster.com\/games)\n\n[Merriam Webster](https:\/\/www.merriam-webster.com\/)\n\nLearn a new word every day. Delivered to your inbox\\!\n\n- [Help](https:\/\/www.merriam-webster.com\/help)\n- [About Us](https:\/\/www.merriam-webster.com\/about-us)\n- [Advertising Info](https:\/\/corporate.britannica.com\/advertise-with-us)\n- [Contact Us](https:\/\/www.merriam-webster.com\/contact-us)\n- [Privacy Policy](https:\/\/www.merriam-webster.com\/privacy-policy)\n- [Terms of Use](https:\/\/www.merriam-webster.com\/terms-of-use)\n\n- [Facebook](https:\/\/www.facebook.com\/merriamwebster)\n- [Twitter](https:\/\/twitter.com\/merriamwebster)\n- [YouTube](https:\/\/www.youtube.com\/user\/MerriamWebsterOnline)\n- [Instagram](https:\/\/www.instagram.com\/merriamwebster\/)\n\n© 2026 Merriam-Webster, Incorporated","attrs_readable_markdown":"**:** a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium called also Brownian movement\n\nExamples of *Brownian motion* in a Sentence\n\nRecent Examples on the Web\n\nExamples are automatically compiled from online sources to show current usage.   [Read More](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion)  Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. [Send us feedback](https:\/\/docs.google.com\/forms\/d\/1GAQr3Kn1cURCVHUA82hAga1Wv8DCH0IuqDLRUrOpN7M\/viewform?ts=63f4f653&entry.1515682415=https:\/\/www.merriam-webster.com\/dictionary%2FBrownian%20motion).\n\nWhat looks like *Brownian motion*, random and chaotic, is in fact as efficient a system of transportation as there is. — Bryan C. Donohue, *Baltimore Sun*, 17 Apr. 2024 But another is that at galactic scales, the acceleration due to gravity can vary by a small but random amount, as if spacetime were eliciting some kind of *Brownian motion* on the masses within it. — The Physics Arxiv Blog, *Discover Magazine*, 11 Mar. 2024 But there’s another kind of movement available in liquids that has rarely been considered for this purpose—molecular thermal motion or *Brownian motion*. — *IEEE Spectrum*, 27 Oct. 2023 Brown noise gets its name not from the color, but because it’s produced by a type of random movement known as *Brownian motion*. — Samantha Vincenty, *SELF*, 12 Aug. 2022\n\nWord History\n\nEtymology\n\nRobert *Brown* †1858 Scottish botanist\n\nFirst Known Use\n\n1849, in the meaning defined [above](https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion#h1)\n\nTime Traveler\n\nThe first known use of *Brownian motion* was in 1849\n\nBrowse Nearby Words\n\nCite this Entry\n\nStyle\n\n“Brownian motion.” *Merriam-Webster.com Dictionary*, Merriam-Webster, https:\/\/www.merriam-webster.com\/dictionary\/Brownian%20motion. Accessed 25 Mar. 2026.\n\nMore from Merriam-Webster on *Brownian motion*\n\nSubscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free\\!\n\n[Merriam-Webster unabridged](https:\/\/unabridged.merriam-webster.com\/check-redirect-premium?utm_source=mw&utm_medium=inline-def&utm_campaign=evergreen&headword=Brownian%20motion)\n\nMore from Merriam-Webster\n\nTop Lookups","meta_canonical":null}

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Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.6 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
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URL	https://www.merriam-webster.com/dictionary/Brownian%20motion
Last Crawled	2026-03-25 15:32:42 (17 days ago)
First Indexed	2016-12-15 07:33:38 (9 years ago)
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Meta Title	BROWNIAN MOTION Definition & Meaning - Merriam-Webster
Meta Description	The meaning of BROWNIAN MOTION is a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium —called also Brownian movement.
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Boilerpipe Text	: a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium called also Brownian movement Examples of Brownian motion in a Sentence Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback . What looks like Brownian motion , random and chaotic, is in fact as efficient a system of transportation as there is. — Bryan C. Donohue, Baltimore Sun , 17 Apr. 2024 But another is that at galactic scales, the acceleration due to gravity can vary by a small but random amount, as if spacetime were eliciting some kind of Brownian motion on the masses within it. — The Physics Arxiv Blog, Discover Magazine , 11 Mar. 2024 But there’s another kind of movement available in liquids that has rarely been considered for this purpose—molecular thermal motion or Brownian motion . — IEEE Spectrum , 27 Oct. 2023 Brown noise gets its name not from the color, but because it’s produced by a type of random movement known as Brownian motion . — Samantha Vincenty, SELF , 12 Aug. 2022 Word History Etymology Robert Brown †1858 Scottish botanist First Known Use 1849, in the meaning defined above Time Traveler The first known use of Brownian motion was in 1849 Browse Nearby Words Cite this Entry Style “Brownian motion.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/Brownian%20motion. Accessed 25 Mar. 2026. More from Merriam-Webster on Brownian motion Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged More from Merriam-Webster Top Lookups
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[Log In](https://www.merriam-webster.com/login) # Brownian motion ## [noun](https://www.merriam-webster.com/dictionary/noun) Brown·ian motion [ˈbrau̇-nē-ən-](https://www.merriam-webster.com/dictionary/Brownian%20motion?pronunciation&lang=en_us&dir=b&file=browni01 "How to pronounce Brownian motion (audio)") : a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium called also Brownian movement ## Examples of Brownian motion in a Sentence Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. [Read More](https://www.merriam-webster.com/dictionary/Brownian%20motion) Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. [Send us feedback](https://docs.google.com/forms/d/1GAQr3Kn1cURCVHUA82hAga1Wv8DCH0IuqDLRUrOpN7M/viewform?ts=63f4f653&entry.1515682415=https://www.merriam-webster.com/dictionary%2FBrownian%20motion). What looks like Brownian motion, random and chaotic, is in fact as efficient a system of transportation as there is. — Bryan C. Donohue, Baltimore Sun, 17 Apr. 2024 But another is that at galactic scales, the acceleration due to gravity can vary by a small but random amount, as if spacetime were eliciting some kind of Brownian motion on the masses within it. — The Physics Arxiv Blog, Discover Magazine, 11 Mar. 2024 But there’s another kind of movement available in liquids that has rarely been considered for this purpose—molecular thermal motion or Brownian motion. — IEEE Spectrum, 27 Oct. 2023 Brown noise gets its name not from the color, but because it’s produced by a type of random movement known as Brownian motion. — Samantha Vincenty, SELF, 12 Aug. 2022 ## Word History Etymology Robert Brown †1858 Scottish botanist First Known Use 1849, in the meaning defined [above](https://www.merriam-webster.com/dictionary/Brownian%20motion#h1) Time Traveler The first known use of Brownian motion was in 1849 [See more words from the same year](https://www.merriam-webster.com/time-traveler/1849?src=defrecirc-timetraveler-etycard) ## Rhymes for Brownian motion - [locomotion](https://www.merriam-webster.com/dictionary/locomotion) - [commotion](https://www.merriam-webster.com/dictionary/commotion) - [demotion](https://www.merriam-webster.com/dictionary/demotion) - [devotion](https://www.merriam-webster.com/dictionary/devotion) - [emotion](https://www.merriam-webster.com/dictionary/emotion) - [laotian](https://www.merriam-webster.com/dictionary/laotian) - [promotion](https://www.merriam-webster.com/dictionary/promotion) - [lotion](https://www.merriam-webster.com/dictionary/lotion) - [notion](https://www.merriam-webster.com/dictionary/notion) - [ocean](https://www.merriam-webster.com/dictionary/ocean) - [potion](https://www.merriam-webster.com/dictionary/potion) [See All Rhymes for Brownian motion](https://www.merriam-webster.com/rhymes/perfect/brownian%20motion) ## Browse Nearby Words [brown hyena](https://www.merriam-webster.com/dictionary/brown%20hyena) Brownian motion [brownie](https://www.merriam-webster.com/dictionary/brownie) [See all Nearby Words](https://www.merriam-webster.com/browse/dictionary/b/62) ## Cite this Entry Style “Brownian motion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Brownian%20motion. Accessed 25 Mar. 2026. [![](https://www.merriam-webster.com/dist-cross-dungarees/2026-03-24--19-00-01-2qnry/images/svg/redesign/copy-icon.svg)Copy Citation](https://www.merriam-webster.com/dictionary/Brownian%20motion) ## Kids Definition Brownian motion noun Brown·ian motion [ˌbrau̇-nē-ən-](https://www.merriam-webster.com/dictionary/Brownian%20motion?pronunciation&lang=en_us&dir=b&file=browni01 "How to pronounce Brownian motion (audio)") : a random movement of microscopic particles in liquids or gases that results from collisions with molecules of the fluid surrounding the particles called also Brownian movement Etymology named for Robert Brown 1773–1858 Scottish scientist ## Medical Definition Brownian motion noun Brown·ian motion [ˌbrau̇-nē-ən-](https://www.merriam-webster.com/dictionary/Brownian%20motion?pronunciation&lang=en_us&dir=b&file=browni01 "How to pronounce Brownian motion (audio)") : a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the fluid surrounding the particles called also Brownian movement ## More from Merriam-Webster on Brownian motion Britannica.com: [Encyclopedia article about Brownian motion](https://www.britannica.com/EBchecked/topic/81815/Brownian-motion) Love words? 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Readable Markdown	: a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium called also Brownian movement Examples of Brownian motion in a Sentence Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. [Read More](https://www.merriam-webster.com/dictionary/Brownian%20motion) Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. [Send us feedback](https://docs.google.com/forms/d/1GAQr3Kn1cURCVHUA82hAga1Wv8DCH0IuqDLRUrOpN7M/viewform?ts=63f4f653&entry.1515682415=https://www.merriam-webster.com/dictionary%2FBrownian%20motion). What looks like Brownian motion, random and chaotic, is in fact as efficient a system of transportation as there is. — Bryan C. Donohue, Baltimore Sun, 17 Apr. 2024 But another is that at galactic scales, the acceleration due to gravity can vary by a small but random amount, as if spacetime were eliciting some kind of Brownian motion on the masses within it. — The Physics Arxiv Blog, Discover Magazine, 11 Mar. 2024 But there’s another kind of movement available in liquids that has rarely been considered for this purpose—molecular thermal motion or Brownian motion. — IEEE Spectrum, 27 Oct. 2023 Brown noise gets its name not from the color, but because it’s produced by a type of random movement known as Brownian motion. — Samantha Vincenty, SELF, 12 Aug. 2022 Word History Etymology Robert Brown †1858 Scottish botanist First Known Use 1849, in the meaning defined [above](https://www.merriam-webster.com/dictionary/Brownian%20motion#h1) Time Traveler The first known use of Brownian motion was in 1849 Browse Nearby Words Cite this Entry Style “Brownian motion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Brownian%20motion. Accessed 25 Mar. 2026. More from Merriam-Webster on Brownian motion Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free\! [Merriam-Webster unabridged](https://unabridged.merriam-webster.com/check-redirect-premium?utm_source=mw&utm_medium=inline-def&utm_campaign=evergreen&headword=Brownian%20motion) More from Merriam-Webster Top Lookups
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