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millimeter

[mil-uh-mee-ter]
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noun
  1. a unit of length equal to one thousandth of a meter and equivalent to 0.03937 inch. Abbreviation: mm
Also especially British, mil·li·me·tre.

Origin of millimeter

From the French word millimètre, dating back to 1800–10. See milli-, meter1
Related formsmil·li·met·ric [mil-uh-me-trik] /ˌmɪl əˈmɛ trɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for millimetre

Historical Examples

  • This machine forged forty millimetre rivets with the calm ease of a giant.

    L'Assommoir

    Emile Zola

  • It is about the ten-millionth of a millimetre, and a millimetre is about the 1/25 of an inch!

  • The young larva measures a millimetre and a half2 in length.

  • I place on the surface of the honey five or six bits of straw a millimetre in length.

    The Mason-bees

    J. Henri Fabre

  • In practice, wave-lengths are expressed in ten-millionths of a millimetre.


British Dictionary definitions for millimetre

millimetre

US millimeter

noun
  1. one thousandth of a metreSymbol: mm
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

Word Origin and History for millimetre

millimeter

n.

also millimetre, 1802, from French millimetre; see milli- + meter (n.2).

Online Etymology Dictionary, © 2010 Douglas Harper

millimetre in Medicine

millimeter

([object Object])
n.
  1. A unit of length equal to one thousandth (10-3) of a meter (0.0394 inch).
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

millimetre in Science

millimeter

[mĭlə-mē′tər]
  1. A unit of length in the metric system equal to 0.001 meter. See Table at measurement.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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