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Synonyms

mg

1 American  

  1. milligram; milligrams.

Mg 2 American  

abbreviation

Music.

  1. left hand.

Mg 3 American  
Symbol, Chemistry.

  1. magnesium.

MG 4 American  

  1. machine gun.

  2. major general.

  3. military government.

  4. myasthenia gravis.

MG 1 British  

abbreviation

  1. machine gun

"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
mg 2 British  

abbreviation

  1. Madagascar

"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
mg 3 British  

symbol

  1. milligram

"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
Mg 4 British  

symbol

  1. magnesium

"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
mg Scientific  

  1. Abbreviation of milligram

Etymology

Origin of Mg

From French main gauche

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.

Wegovy HD is three times higher, at 7.2 mg per dose.

From MarketWatch • Apr. 8, 2026

The American Heart Association recommends limiting sodium intake to no more than 2,300 mg per day, with an ideal target of less than 1,500 mg for most adults, especially those with high blood pressure.

From Science Daily • Mar. 31, 2026

If you instead go for Taco Bell’s under-eye masks, just drink plenty of water with your Taco Bell Nachos BellGrande, which is high in fat and has more than 1,100 mg of skin-dehydrating sodium.

From Los Angeles Times • Mar. 18, 2026

The site lists a 30-day supply of Novo Nordisk’s Wegovy 1.5 mg weight loss-pill for $149, down from an original price of $1,349.

From Barron's • Feb. 6, 2026

David may not have the sorry-gotta-go rule down, but he’s got this one perfect: if you say something over and over and over, mg they It give in to shut you up.

From "Rules" by Cynthia Lord

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.