micron

noun

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

Examples of micron in a Sentence

Recent Examples on the Web
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To accomplish this filtering, the instrument uses an etalon — two glass plates separated by mere microns. Kameryn Griesser, CNN Money, 29 Apr. 2025 For particulate pollution smaller than 2.5 microns across, known as PM2.5, the report analyzed both daily and annual pollution levels. Rebecca Dzombak, New York Times, 23 Apr. 2025 They are then crafted by artisans in Jaipur, using brass-plated with 3 microns of 18-karat gold and set with semiprecious stones. Devorah Lauter, WWD, 31 Jan. 2025 Its filter is designed to capture 99.97% of airborne particles 0.3 microns in size for cleaner, less musty air. Julia Harrison, Architectural Digest, 4 Apr. 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 6 Jun. 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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