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millimicron

[mil-uh-mahy-kron]

noun, plural mil·li·mi·crons, mil·li·mi·cra [mil-uh-mahy-kruh] /ˈmɪl əˌmaɪ krə/.

a unit of length equal to one thousandth of a micron; one-billionth of a meter. Symbol: mμ

Nearby words

  1. millilux,
  2. millime,
  3. millimeter,
  4. millimetre,
  5. millimetric,
  6. millimole,
  7. milline,
  8. milliner,
  9. millinery,
  10. milling
Compare nanometer.

Origin of millimicron

First recorded in 1900–05; milli- + micron
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for millimicron

millimicron

noun

an obsolete name for a nanometre; one millionth of a millimetre
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for millimicron

millimicron

[mĭl′ə-mī′krŏn]

n.

A unit of length that is equal to one thousandth (10-3) of a micrometer or one billionth (10-9) of a meter; nanometer.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.