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

Recent Examples on the Web

Noun

Between 50 and 300 meters (m) in depth, the Bisbee is underlain by approximately two kms thick of the same Paleozoic carbonate formations that host the 110 MT Hermosa-Taylor zinc-lead-silver deposit of South32 located 60 km southwest of Tombstone. —Sacramento Bee, 24 June 2024

Bradley Iger Four individual throttle bodies serve four cylinders apiece, and in its V configuration, the new engine required a crankshaft that's more than 3 feet long (1 m). —Bradley Iger, Ars Technica, 20 June 2024

Related article Justice Dept. reaches $139m settlement over FBI failures in investigation of Nassar gymnastics abuse claims The abuse continued even though some adults knew about it, according to the lawsuit. —Amy Simonson, CNN, 18 June 2024

The jury will then get the case. 20m ago Judge lays out the schedule for the final phase of the trial After Costello was dismissed, Merchan laid out the schedule for how the rest of the trial will unfold. —Graham Kates, CBS News, 21 May 2024

The area is characterized by steep topography on the eastern flank of the Central Cordillera with elevations between 800 m and 2,000 m above sea level (a.s.l.). —Kansas City Star, 22 May 2024

Running on the homestretch into a 7.7 m/s headwind, both teams finished in 3:16.77, but the Raptors were ruled to have crossed just two thousandths of a second faster. —Braidon Nourse, The Denver Post, 18 May 2024

Every second of free fall means another 9.8 m/s of velocity, and that can quickly add up to an extremely difficult energy dissipation problem. —IEEE Spectrum, 12 May 2024

Around 180 million people watch the grand final live on TV — more than the Super Bowl — with a global reach of around 400m, including social and digital platforms. —Louis Staples, Rolling Stone, 10 May 2024

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