micron

noun

mi·​cron ˈmī-ˌkrän How to pronounce micron (audio)
: micrometer entry 2

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.
Additionally, the average diameter of the cashmere fiber must not exceed 19 microns and the cashmere fibers in the wool product must contain no more than 3 percent (by weight) of cashmere fibers with average diameters that exceed 30 microns. — Angela Velasquez, Footwear News, 27 Aug. 2026 The photons emerged from an optical fiber just 5 microns in diameter, less than one-tenth the width of a human hair. — Rupendra Brahambhatt, Interesting Engineering, 23 Aug. 2026 The frame of this printer is rigid and stout to minimize error-inducing vibration during printing; HeyGears says layer positioning errors are no more than 2 microns. — Michael Lydick, PC Magazine, 21 Aug. 2026 The company says its machine prints at a layer thickness of 10-20 microns – less than that of a human hair – for precise details using its motion control system. — New Atlas, 27 July 2026 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

Rhymes for micron

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Browse Nearby Words

Micromys
micron
micronephridium
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Cite this Entry

“Micron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micron. Accessed 1 Sep. 2026.

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Kids Definition

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

Britannica.com: Encyclopedia article about micron

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