Dictionary.com

millimicron

[ mil-uh-mahy-kron ]
/ ˈmɪl əˌmaɪ krɒn /
Save This Word!

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

QUIZZES

QUIZ YOURSELF ON THE 12 TYPES OF VERB TENSES!

Loosen up your grammar muscles because it’s time to test your knowledge on verb tenses!
Question 1 of 6
The verb tenses can be split into which 3 primary categories?

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help
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. 2021

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
[ mĭlə-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.
FEEDBACK