Definition of micron in English:


Line breaks: mi¦cron
Pronunciation: /ˈmʌɪkrɒn


  • A unit of length equal to one millionth of a metre, used in many technological and scientific fields.
    More example sentences
    • Plastic shopping bags are currently about 15 microns thick (a micron is a thousandth of a millimetre).
    • Nanowires are crystals only a few nanometers in diameter but up to several microns in length.
    • While microscopic, the particles are large enough to be measured in microns, or millionths of a meter.


late 19th century: from Greek mikron, neuter of mikros 'small'.

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