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mm

mm

160 1.0
A unit of length equal to one thousandth of a meter
  • noun
  • /ɛm ɛm/
translation icon : milímetro
  • Almost any lens can be used, although a 100mm macro is my personal favorite.
  • mm diameter
  • measured in mm
  • mm in size

Examples

  • Each electrode consisted of three 10-mm silver bars with interbar distances of 10 mm.

    Academic text (2011)
  • The six sizes from 64 mm to 200 mm are fitted with a multitooth guide.

    Academic text (2011)
  • The skin flap was 6 mm thick and was handled gently during surgery.

    Academic text (1999)
  • A long lens, 500-2000 mm, for imaging the Sun in partial and total phases.

    Academic text (1999)
  • The new model of the smartphone has a thickness of just 7 mm.

  • The doctor recommended the incision should be no wider than 5 mm.

  • The diameter of the pipe is 25 mm, which is suitable for this installation.

Synonyms

millimeter
vsmm
  • Specialized
140 2.5

A small measurement of length equal to one thousandth of a meter

is the short symbol used in measurements

Compounds

mm Hg
  • Specialized
1 3.9

A measure of pressure used for blood and air, based on mercury height

Ah Mm
  • Slang
9.9

An older woman in Singapore and Malaysia who talks a lot and shares local news

Surface Forms

mm singular
mms plural

Etymology

Mm stands for milli and metre, where milli means 'one thousandth' and metre comes from an old Greek word for 'measure' and is the same root as the familiar word meter. So a mm is one thousandth of a metre and is used for very small lengths like screws or rainfall.