\ ˈem
\
\
plural m's or ms\
ˈemz
\
\
Definition of m
(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
6a
: em sense 2
b
: pica sense 2
Definition of m (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
Definition of M (Entry 3 of 4)
1
Mach
2
magnitude
3
March
4
May
5
medium
6
mega-
7
million
8
molar; molarity
9
monsieur
Definition of m- (Entry 4 of 4)
meta-
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From the Editors at Merriam-Webster
Absent Letters That Are Heard Anyway
Absent Letters That Are Heard Anyway
They aren't seen but they are heard
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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
See the full definition for m in the English Language Learners Dictionary
\ ˈem
\
\
plural m's or ms\
ˈemz
\
Kids Definition of m
1
: the 13th letter of the English alphabet
2
: 1000 in Roman numerals
m.
abbreviationKids Definition of m.
1
male
2
meter
3
mile
Medical Definition of m
(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
m-
abbreviationMedical Definition of m- (Entry 2 of 4)
meta-
M
noun
\ ˈem
\
\
plural M's or Ms
Medical Definition of M (Entry 3 of 4)
: an antigen of human blood that shares a common genetic locus with the N antigen
Medical Definition of M (Entry 4 of 4)
1
[Latin misce]
mix
—used in writing prescriptions
2
mitosis — see m phase
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Time Traveler for m
The first known use of m was before the 12th century
See more words from the same century