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.
Using a regular controller, players can control a tiny digital ship, firing nanoscale bullets to push around a physical polystyrene ball just a few microns wide. Michael Irving, New Atlas, 27 Feb. 2025 Researchers studying health outcomes in southern California concluded that exposure to particular matter smaller than 2.5 microns, called PM2.5, from wildfires was up to 10 times more harmful to human health compared with exposure to PM2.5 from other sources. Allison Parshall, Scientific American, 13 Jan. 2025 These disks, 5 millimeters in diameter and 265 microns thick, were then placed over an inflatable membrane, inflated like a balloon to form a dome, magnetized, and returned to their original flat state. Ars Technica, 27 Dec. 2024 Disks with orthogonal cuts 1.5 millimeters long and 250 microns wide could reach 4 millimeters when exposed to the magnetic field, more than twice as high as domes without them. Ars Technica, 27 Dec. 2024 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 3 Apr. 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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