millimetre

British

/ ˈmɪlɪˌmiːtə /

noun

mm. one thousandth of a metre

"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

Example Sentences

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millimetre

London and its suburbs are one of 19 English regions to have had no more than one millimetre of rainfall last month.

From Barron's ● Aug. 3, 2026

The build-up of peatland happens very slowly, only growing about a millimetre or two every year.

From BBC ● May 2, 2026

Not those hairline millimetre is he on or off line drawing nonsense situations.

From BBC ● Feb. 15, 2026

The dust grains around R Doradus are typically only about one ten-thousandth of a millimetre across.

From Science Daily ● Jan. 12, 2026

"There, George!" cried one of the parrots; while the giant tortoise thoughtfully advanced one millimetre.

From A Drake by George! by John Trevena

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023