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.
But terahertz waves stretch hundreds of microns long. Aamir Khollam, Interesting Engineering, 4 Feb. 2026 The Philos has 130 settings that make six-micron adjustments, meaning the distance between the burrs moves six microns at a time. Noah Kaufman, Bon Appetit Magazine, 20 Jan. 2026 Dr McKeon says air filters with this rating capture 99.97 percent of particles as small as 0.3 microns. Caroline Lubinsky, Martha Stewart, 19 Jan. 2026 These layers, in conjunction with an electrostatic component, help block at least 95 percent of airborne particles and liquid droplets with a diameter greater than .3 microns. Bestreviews, Chicago Tribune, 19 Jan. 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

Browse Nearby Words

Cite this Entry

“Micron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micron. Accessed 14 Feb. 2026.

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

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