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micron

noun

mi·​cron ˈmī-ˌkrän How to pronounce micron (audio)

Examples of micron 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.
In a separate study, undergraduate student Levi Hancock utilized ptycho-tomography to image a single pillar of TPP foam just 10 microns wide. Aman Tripathi, Interesting Engineering, 27 Nov. 2025 Other papers have speculated more generally that only microplastics smaller than 10 microns can be taken up by the body’s organs. Matt Fuchs, Time, 24 Nov. 2025 Each electrode is smaller than 40 microns – thinner than a human hair. New Atlas, 21 Nov. 2025 Covering areas up to 1073 square feet, this powerful air purifier removes up to 99.97% of airborne particles between 0.1 and 0.3 microns, including dust, pollen and dander. Bestreviews, Mercury News, 21 Nov. 2025 See All Example Sentences for micron

Word History

Etymology

New Latin, from Greek mikron, neuter of mikros small — more at micr-

First Known Use

1879, in the meaning defined above

Time Traveler
The first known use of micron was in 1879

Browse Nearby Words

Cite this Entry

“Micron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micron. Accessed 1 Dec. 2025.

Kids Definition

micron

noun
mi·​cron ˈmī-ˌkrän How to pronounce micron (audio)

Medical Definition

micron

noun
mi·​cron ˈmī-ˌkrän How to pronounce micron (audio)
: a unit of length equal to one millionth of a meter

called also micrometer, mu

More from Merriam-Webster on micron

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