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Definition of micron

micron

/ˈmaɪ.krɑːn/
mi · cron

Plural:microns
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micron Lexical Profile

micron Game Scores & Validity

• noun

1

A unit of length equal to one millionth of a meter, used largely to measure microscopic structures, wavelengths of infrared radiation, and precise manufacturing tolerances.

Example

"The diameter of a typical human hair is roughly seventy-five microns."

Word Nuance & Usage

Although the official International System of Units (SI) term is 'micrometer' (symbol: μm), 'micron' remains widely preferred in everyday engineering, biology, and optical sciences.

• Rhymes for micron

Word Origin & Etymology

Late 19th century: from Greek mikron, the neuter of mikros, meaning 'small'.

Cite this Entry


Wordmom. (2026). Definition of Micron. In Wordmom Dictionary. Retrieved Oct 13, 2026, from https://wordmom.com/dictionary/micron
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