noun
a metric unit of length equal to one billionth of a meter
• Syn: ↑nanometer, ↑nanometre, ↑nm, ↑micromillimeter, ↑micromillimetre
• Hypernyms: ↑metric linear unit
• Part Holonyms: ↑micron, ↑micrometer
• Part Meronyms: ↑angstrom, ↑angstrom unit, ↑A
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\\“+\ nounEtymology: International Scientific Vocabulary milli- + micron
: a unit of length (as for light waves) equal to one thousandth of a micron or one millionth of a millimeter : micromillimeter — symbol mμ
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/mil"euh muy'kron/, n., pl. millimicrons, millimicra /-kreuh/.
a unit of length equal to one thousandth of a micron; one-billionth of a meter. Symbol: mµ Cf. nanometer.
[1900-05; MILLI- + MICRON]
Useful english dictionary. 2012.