m

1 of 4

noun

ˈem 

plural m's or ms ˈemz 

often capitalized, often attributive

1

a

: 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

6

a

: em sense 2

b

: pica sense 2

m

2 of 4

abbreviation (1)

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

3 of 4

abbreviation (2)

1

Mach

2

magnitude

3

March

4

May

5

medium

6

mega-

7

million

8

molar; molarity

9

monsieur

m-

4 of 4

abbreviation (3)

meta-

Examples of m in a Sentence

Noun

a word that starts with an m

a word that starts with m

Word History

First Known Use

Noun

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

Phrases Containing m

• m-commerce

Kids Definition

m

noun

ˈem

often capitalized

1

: the 13th letter of the English alphabet

2

: one thousand in Roman numerals

Medical Definition

m

1 of 4 abbreviation

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

m-

2 of 4 abbreviation

meta-

M

3 of 4 noun

ˈem 

plural M's or Ms

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

M

4 of 4 abbreviation

1

[Latin misce] mix

—used in writing prescriptions

2

mitosis see m phase