Brownian motion

noun

Brown·​ian motion ˈbrau̇-nē-ən- 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 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

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'Brownian motion.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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

Dictionary Entries Near Brownian motion

Cite this Entry

“Brownian motion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Brownian%20motion. Accessed 29 Sep. 2023.

Kids Definition

Brownian motion

noun
Brown·​ian motion ˌbrau̇-nē-ən- 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- 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

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