m

1 of 4

noun

plural m's or ms ˈemz How to pronounce m (audio)
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

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
Google and Meta have been forced to pay Australian publishers A$200m a year, but not before Meta restricted access to Australian government websites, including its health services during the Covid pandemic. Toby Shapshak, Forbes, 27 Feb. 2024 Jetstream #1 is located approximately 15m (50ft) from the original discovery well LOD-6 that hit free gas with a concentration of 10.5% helium. Sacramento Bee, 5 Feb. 2024 The update on Dream of the Desert is one of many as Saudi Arabia fast-tracks its ambitions to become a leading tourist destination, with plans to attract 150m visitors by the end of the decade. Clare Dight, Condé Nast Traveler, 30 Jan. 2024 Drilling at the Jetstream #1 appraisal well* is expected to begin February 2nd, located within 20m of the original LOD-6 discovery well. Fort Worth Star-Telegram, 29 Jan. 2024 In a thought experiment, Tyndall calculated what would happen if vehicle hood heights were limited by regulation to 49.2 inches (1.25 m) or less. Jonathan M. Gitlin, Ars Technica, 23 Jan. 2024 This says that a moving particle has a momentum (p) that is equal to the particle's mass (m) times its velocity (v). Rhett Allain, WIRED, 21 Jan. 2024 The powertrain can regenerate up to 240 kW under braking, at deceleration rates of up to 4.3 m/s2. Jonathan M. Gitlin, Ars Technica, 11 Dec. 2023 Aeschylus 15m Doesn’t the author support retribution against Trump and his supporters no matter whether their rights are abused or the DOJ hides exculpatory evidence? Noah Rothman, National Review, 11 Dec. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'm.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

Noun

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

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

Dictionary Entries Near m

Cite this Entry

“M.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/m. Accessed 18 Mar. 2024.

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
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

More from Merriam-Webster on m

Last Updated: - Updated example sentences
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