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MSM

1 American  

abbreviation

  1. mainstream media.

  2. men who have sex with men.

M.S.M. 2 American  

abbreviation

  1. Master of Sacred Music.

  2. Master of Science in Music.

MSM British  

abbreviation

  1. mainstream media, used esp in blogs

  2. Meritorious Service Medal

"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.

When clade IIb surfaced in MSM in Europe and North America last year, there was an immediate demand for a smallpox vaccine made by Bavarian Nordic that the U.S.

From Science Magazine • Nov. 29, 2023

Despite the recent updates, some barriers to blood donation still remain for MSM.

From Salon • Aug. 7, 2023

Two other products — Pharmedica USA’s Purely Soothing, 15% MSM Drops and Apotex’s Brimonidine Tartrate Ophthalmic Solution, 0.15% — were also pulled by their makers, though they are not related to the outbreak.

From Washington Post • Mar. 23, 2023

Pharmedica on Friday said it is recalling two lots of Purely Soothing 15% MSM Drops due to problems “that could result in blindness.”

From Seattle Times • Mar. 7, 2023

This does not mean the virus can only spread in the MSM community, however.

From Scientific American • Aug. 17, 2022

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.