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millimetre

British  
/ ˈmɪlɪˌmiːtə /

noun

  1.  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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Kostas Lagouvardos, research director at the National Observatory in Athens, said the "extreme" weather phenomenon had dumped up to 170 millimetres of rain on the capital.

From Barron's

That is despite controversial "microscopic" VAR decisions, ruling to the millimetre.

From BBC

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

From Science Daily

Other leagues, including the top flights in Germany, Spain and Italy, have gone back to offside by the millimetre.

From BBC

It sounds like something from the distant future, but nanotechnology - engineering at a scale of millionths of a millimetre - is already used in lots of everyday real-life tech.

From BBC