millimicron

[ mil-uh-mahy-kron ]
/ ˈmɪl əˌmaɪ krɒn /

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

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Origin of millimicron

First recorded in 1900–05; milli- + micron

Words nearby millimicron

millilitre, millilux, millime, millimeter, millimetre, millimicron, millimole, milline, milliner, millinery, milling
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for millimicron

millimicron
/ (ˈmɪlɪˌmaɪkrɒn) /

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

Medical 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.