[ mil-uh-mee-ter ]
/ ˈmɪl əˌmi tər /


a unit of length equal to one thousandth of a meter and equivalent to 0.03937 inch. Abbreviation: mm

Nearby words

  1. millilambert,
  2. milliliter,
  3. millilitre,
  4. millilux,
  5. millime,
  6. millimetre,
  7. millimetric,
  8. millimicron,
  9. millimole,
  10. milline

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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for millimetric

  • The arms are then extended along the cross rod which is marked with a millimetric scale.

    Pedagogical Anthropology|Maria Montessori
  • The curves are measured by means of the millimetric tape; the diameters by means of the calipers.

    Pedagogical Anthropology|Maria Montessori

Word Origin and History for millimetric



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

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for millimetric


[ mĭlə-mē′tər ]


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.

Science definitions for millimetric


[ mĭlə-mē′tər ]

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.