millimeter

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(mĭl'ə-mē'tər) pronunciation
n. (Abbr. mm)
A unit of length equal to one thousandth (10 -3) of a meter, or 0.0394 inch.


One thousandth of a meter, or 1/25th of an inch. See metric system.

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Unit Conversions:

millimeters

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To convert from millimeters to:

centimeters, multiply by .1.
feet, multiply by 3.281E-03.
inches, multiply by .03937.
kilometers, multiply by 1E-06.
meters, multiply by .001.
miles, multiply by 6.214E-07.
mils, multiply by 39.37.
yards, multiply by 1.094E-03.

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Word Tutor:

millimeter

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pronunciation

IN BRIEF: A unit of length equal to one thousandth of a meter, or 0.0394 inch.

pronunciation The world changes according to the way people see it, and if you alter, even by a millimeter, the way . . . people look at reality, then you can change it. — James Baldwin (1924-1987), American writer and civil rights leader.

Tutor's tip: Note: Measure (volume to the one-thousandth liter) with "milliliter" and distance to the (one-thousandth meter) with "millimeter."

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or (US) millimeter

symbol: mm; a unit of length equal to 10−3 metre.

Previous:millilitre, milligram, milliequivalent
Next:millimetre of mercury, millimicro+, millimicron

One-thousandth (10−3) of a meter; equivalent to 0.039 inch; abbreviated mm.

Random House Word Menu:

categories related to 'millimeter'

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Random House Word Menu by Stephen Glazier
For a list of words related to millimeter, see:
  • Metric System - millimeter: mm; one-tenth centimeter, one-thousandth meter


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To help compare different orders of magnitude this page lists lengths between 10−3 m and 10−2 m (1 mm and 1 cm).

Distances shorter than 1 mm

  • 1.0 mm — 1/1000 of a metre
  • 1.0 mm — 0.03937 inches or 5/127 (exactly)
  • 1.0 mm — side of square of area 1 mm²
  • 1.0 mm — diameter of a pinhead
  • 1.5 mm — length of average flea
  • 2.54 mm — distance between pins on old DIP (dual-inline-package) electronic components
  • 5 mm — length of average red ant
  • 5.56 x 45 mm NATO — standard ammunition size
  • 7.62 x 51 mm NATO — common military ammunition size

Distances longer than 1 cm

See also


Translations:

Millimeter

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Dansk (Danish)
n. - millimeter

Nederlands (Dutch)
millimeter

Français (French)
n. - millimètre

Deutsch (German)
n. - Millimeter

Ελληνική (Greek)
n. - χιλιοστόμετρο, χιλιοστό

Italiano (Italian)
millimetro

Português (Portuguese)
n. - milímetro (m)

Русский (Russian)
миллиметр

Español (Spanish)
n. - milímetro

Svenska (Swedish)
n. - millimeter

中文(简体)(Chinese (Simplified))
公厘, 毫米

中文(繁體)(Chinese (Traditional))
n. - 公釐, 毫米

한국어 (Korean)
n. - 밀리미터(1000분의 1미터)

日本語 (Japanese)
n. - ミリメートル

العربيه (Arabic)
‏(الاسم) مليميتر واحد بالألف من المتر‏

עברית (Hebrew)
n. - ‮מילימטר (אלפית המטר)‬


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mm (abbreviation)