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micron Syllabification: mi·cron
Pronunciation: /ˈmīˌkrän/

Definition of micron in English:


A unit of length equal to one millionth of a meter, used in many technological and scientific fields.
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'.

Definition of micron in:
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