abbreviation (1) abbreviation (2) abbreviation (3) noun 4 noun abbreviation (1) abbreviation (2) abbreviation (3) abbreviation (1) abbreviation (2) abbreviation (3) Example Sentences Phrases Containing Related Articles Cite this Entry Citation Kids Definition Kids Medical Definition Medical More from M-W Show more Cite this Entry Citation Kids Definition Kids Medical Definition Medical Show more Citation Kids Medical More from M-W Save Word To save this word, you'll need to log in. Log In To save this word, you'll need to log in. Log In abbreviation (1) abbreviation (2) abbreviation (3) Words Starting With M Browse 19,456 words and phrases that start with the letter M , from ma to myzostome . Examples of m in a Sentence before the 12th century, in the meaning defined at sense 1a Phrases Containing m Browse Nearby Words Articles Related to m Every Letter Is Silent, Sometimes

Absent Letters That Are Heard Anyway Cite this Entry “M.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/m. Accessed 20 Sep. 2026. Kids Definition Medical Definition More from Merriam-Webster on m Britannica.com: Encyclopedia article about m Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! More from Merriam-Webster Word of the Day See Definitions and Examples » Get Word of the Day daily email! Popular in Grammar & Usage Why do we use apostrophes to show possession? Merriam-Webster’s Great Big List of Words You Love to Hate The Exceptions of '-s' and '-es' Plurals A Who’s Who Regarding ‘Who’s’ and ‘Whose’ 'A' or 'an'? What about before 'h'? An Indefinite Article Guide Popular in Wordplay 9 Words That Sound Like Insults But Aren't Back to School Vocabulary Words from the 'Odyssey' 14 Phobias You Probably Haven't Heard Of The Words of the Week - Sept. 18 Why do we use apostrophes to show possession? 9 Words That Sound Like Insults But Aren't Back to School Vocabulary Games & Quizzes