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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The structure of micron-scale chambers restricts heat transfer while maintaining moisture permeability and quick-drying. Alexandra Harrell, Footwear News, 7 May 2026 After this initial development, the scalability efforts are currently focused on miniaturization — with custom nozzles and specialized inks already producing filaments as thin as 100 microns. Mrigakshi Dixit, Interesting Engineering, 1 May 2026 The Sun, in particular, is extremely massive; even at the orbital distance of Pluto, acceleration due to the Sun’s gravity is somewhere around a few microns-per-second². Big Think, 21 Apr. 2026 For comparison, the average human hair is 70 microns wide. Bestreviews, Chicago Tribune, 7 Apr. 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 12 May. 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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