m

noun, often capitalized, often attributive
\ˈem \
plural m's or ms\ˈemz \

Definition of

(Entry 1 of 4)

1a : the 13th letter of the English alphabet

b : a graphic representation of this letter

c : a speech counterpart of orthographic m

2 : one thousand — see Table of Numbers

3 : a graphic device for reproducing the letter m

4 : one designated m especially as the 13th in order or class

5 : something shaped like the letter M

m

abbreviation (1)

Definition of (Entry 2 of 4)

1 male

2 manual

3 married

4 martyr

5 masculine

6 mass

7 measure

8 meridian

9 [ Latin meridies ] noon

10 meter

11 middle

12 mile

13 [ Latin mille ] thousand

14 milli-

15 minute

16 molal; molality

17 mole

18 month

19 moon

20 morning

21 muscle

M

abbreviation (2)

Definition of (Entry 3 of 4)

1 Mach

2 magnitude

3 March

4 May

5 medium

6 mega-

7 million

8 molar; molarity

9 monsieur

m-

abbreviation (3)

Definition of m- (Entry 4 of 4)

meta-

Examples of m in a Sentence

Noun

a word that starts with an m a word that starts with m

First Known Use of m

Noun

before the 12th century, in the meaning defined at sense 1a

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Dictionary Entries near m

lyx-

-lyze

LZ

m

m-

M

M'Carthy

Statistics for m

Look-up Popularity

Time Traveler for m

The first known use of m was before the 12th century

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More Definitions for m

m

noun

English Language Learners Definition of m

: the 13th letter of the English alphabet

: the Roman numeral that means 1,000

m

noun, often capitalized
\ˈem \
plural m's or ms\ˈemz \

Kids Definition of m

1 : the 13th letter of the English alphabet

2 : 1000 in Roman numerals

Kids Definition of m.

1 male

2 meter

3 mile

Medical Definition of

(Entry 1 of 4)

1 Mach

2 male

3 married

4 masculine

5 mass

6 meter

7 [ Latin mille ] thousand

8 million

9 minim

10 minute

11 molal

12 molality

13 molar

14 molarity

15 mole

16 mucoid

17 muscle

Medical Definition of m- (Entry 2 of 4)

meta-

M

noun
\ˈem \
plural M's or Ms

Medical Definition of (Entry 3 of 4)

: an antigen of human blood that shares a common genetic locus with the N antigen

Medical Definition of (Entry 4 of 4)

1 [ Latin misce ] mix used in writing prescriptions

2 mitosis — see m phase

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More from Merriam-Webster on m

See words that rhyme with m

Spanish Central: Translation of m

Nglish: Translation of m for Spanish Speakers

Britannica.com: Encyclopedia article about m

Comments on m

What made you want to look up m? Please tell us where you read or heard it (including the quote, if possible).

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