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  • mm
    mm
    millimeter; millimeters.
  • mM
    mM
    millimole; millimoles.
  • mm.
    mm.
    abbreviation
    thousands.
  • MM.
    MM.
    abbreviation
    Messieurs.
  • M.M.
    M.M.
    abbreviation
    Master Mason.
  • MM
    MM
    abbreviation
    Military Medal

mm

1 American  
  1. millimeter; millimeters.


mM 2 American  
  1. millimole; millimoles.


mm. 3 American  

abbreviation

  1. thousands.


mm. 4 American  

abbreviation

  1. Music. measures.

  2. millimeter; millimeters.


MM. 5 American  

abbreviation

  1. Messieurs.


M.M. 6 American  

abbreviation

  1. Master Mason.

  2. Master Mechanic.

  3. Master of Music.


mm 1 British  

symbol

  1. millimetre

"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

abbreviation

  1. mutatis mutandis

"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
mm 2 British  

abbreviation

  1. Myanmar

"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

MM 3 British  

abbreviation

  1. Military Medal

  2. the French equivalent of Messrs

"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

mm Scientific  
  1. Abbreviation of millimeter


Etymology

Origin of mm.

From the Latin word millia

Vocabulary lists containing mm

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.

See Examples For:

Investigators obtained camera footage from the shop showing a young man emerging after buying the gun, a Taurus 9 mm pistol, to make a call on his cellphone.

From Salon Jun. 2, 2026

Participants were at least 40 years old and had systolic blood pressure readings between 130-139 mm Hg, a range classified as stage 1 hypertension under ACC/AHA guidelines.

From Science Daily May 10, 2026

The 600 mm rocket launchers, which have a purported range of around 260 miles, were cited as a top goal by Kim at a rare Workers’ Party meeting last month.

From The Wall Street Journal Mar. 15, 2026

"By January 29, the Moscow State University Meteorological Observatory had recorded almost 92 mm of precipitation, which is already the highest value in the last 203 years," it added.

From Barron's Jan. 29, 2026

As a mm she would not be her own boss.

From "The Color Purple" by Alice Walker

In addition, yeast cells were treated with 100 mM sodium perchlorate, either on its own or combined with shock wave exposure.

From Science Daily Feb. 8, 2026

Plants from which these data were taken were grown in 10 mM NaCl solutions.

From Textbooks Jun. 9, 2022

DNA was purified by adding 30 μl of 20 mM EDTA, 5 μl of 3 M sodium acetate and 137 μl ice cold ethanol.

From Nature Sep. 19, 2017

This starting structure was placed into a cubic box of water containing 100 mM NaCl.

From Nature Apr. 4, 2014

“Just then, Death came up to him and tapped him on the shoulder. ‘Excuse me,’ he mM, “but I have come for you.’

From "The Once and Future King" by T. H. White

These patches are also gigantic — the smallest size offered is 9 by 13 mm., which is bigger than the original’s largest size.

From Slate Feb. 26, 2019

Scale bar, 1 mm. b, Representative scanning electron microscopy image showing measurements of inner and outer seed coat layers.

From Nature Feb. 7, 2017

There should be no place on earth not covered by 8 mm. movies, no place without the buzzing of our 8 mm. cameras!

From The New Yorker Apr. 21, 2016

Other vital statistics in Forrestal's report revealed that the 45,000-ton Iowas carry 148 antiaircraft barrels, ranging from 20 mm. up to five-inch dual purpose guns.

From Time Magazine Archive

The ridge is finished with a horizontally flat edge 4-5 mm. wide.

From Mohave Pottery by Harner, Michaell J.

But MM. les Deputés quickly came to their senses, supported the Cabinet, 351 to 110.

From Time Magazine Archive

MM. les Deputies proceeded to increase the deficit by 846,000,000 francs and sent the budget back to the Senators again.

From Time Magazine Archive

Soon epithets rang and adjectives cooed, as MM. les Deputés expounded their grand theme: The Sanctity of Motherhood.

From Time Magazine Archive

MM. les Deputes were presented last week with the 1932 budget which, to the ingenuous eye, balanced.

From Time Magazine Archive

"MM." and engrailing the same as No. 3., and it also wants the "P."

From Notes and Queries, Vol. IV, Number 95, August 23, 1851 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. by Various

As M.M. evolves from sidekick to central character, he also begins to behave more like Butcher, forcing him to wrestle with the erosion of his idealistic principles.

From Los Angeles Times Jun. 10, 2026

I got on the phone with the magazine’s “Editor Grande Supreme” M.M.

From Slate Sep. 8, 2023

“Congratulations India” trended on Twitter after “Naatu Naatu” by M.M.

From Seattle Times Mar. 13, 2023

But the musical highlight of the night was undoubtedly the snatch of the Carpenters’ “Top of the World” sung by the composer M.M.

From New York Times Mar. 12, 2023

“Isn’t that right? I thought it was better to do it so, because Meg’s initials are M.M., and I don’t want anyone to use these but Marmee,” said Beth, looking troubled.

From "Little Women" by Louisa May Alcott

MM: In producing this joint project, how did you two negotiate the differences between your writing styles and personalities?

From Los Angeles Times Mar. 19, 2026

MM: In your intro, Anne, you recall Neal telling you he was working on a writing book.

From Los Angeles Times Mar. 19, 2026

The researchers discovered that combining venetoclax with a drug called 5-azacytidine significantly increased its effectiveness across many MM cell lines, indicating a broader potential patient population that could be treated with the new combination.

From Science Daily Mar. 25, 2024

MM: My top two are probably the same ones most people would name, the first being Cedric Daniels, his principled commanding officer on "The Wire."

From Salon Mar. 22, 2023

Absolute control of the hands and of the feet made by MM.

From Mysterious Psychic Forces An Account of the Author's Investigations in Psychical Research, Together with Those of Other European Savants by Flammarion, Camille

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