m
abbreviation
mass.
m
1 American
m
2
American
Symbol, Electricity.
'm
3
American
[m]
/ m /
M
4
American
[em]
/ ɛm /
Or
m
noun
-
M's,
plural
-
Ms,
plural
-
m's,
plural
-
ms
plural
-
the thirteenth letter of the English alphabet, a consonant.
-
any spoken sound represented by the letter M or m, as in my, summer, or him.
-
something having the shape of an M.
-
a written or printed representation of the letter M or m.
-
a device, as a printer's type, for reproducing the letter M or m.
-
Printing. em.
M
5
American
abbreviation
-
mach.
-
Music. major.
-
male.
-
married.
-
Medieval.
-
medium.
-
mega-.
-
Middle.
-
modal auxiliary.
-
modifier.
-
Economics. monetary aggregate: issued periodically by the Federal Reserve Board as various measures of money supply (M-1, M-1A, M-2, etc.).
-
British. motorway (used with a road number to designate a major highway).
the M1.
M
6
American
Symbol.
-
the thirteenth in order or in a series.
-
(sometimes lowercase) the Roman numeral for 1000.
-
Electricity. magnetization.
-
Biochemistry. methionine.
M'-
7
American
m-
8
American
-
(referring especially to the use of wireless electronic devices) mobile.
m-commerce; m-business.
M-
9
American
m.
10
American
abbreviation
m.
11
American
abbreviation
m.
12
American
abbreviation
-
male.
-
(in Germany) mark; marks.
-
married.
-
masculine.
-
Physics. mass.
-
medium.
-
meter.
-
middle.
-
mile.
-
minute.
-
modification of.
-
modulus.
-
molar.
-
month.
-
moon.
-
morning.
-
mouth.
M.
13
American
Or
m.
abbreviation
M.
14
American
abbreviation
-
MM
plural
-
Majesty.
-
Manitoba.
-
markka; markkaa.
-
Marquis.
-
Music. measure.
-
medicine.
-
medium.
-
meridian.
-
Monday.
-
Monsieur.
-
mountain.
m
1
British
/ ɛm /
noun
-
the 13th letter and tenth consonant of the modern English alphabet
-
a speech sound represented by this letter, usually a bilabial nasal, as in mat
'm
2
British
contraction
-
(verb) am
-
(noun) madam
yes'm
m
3
British
symbol
-
metre(s)
-
mile(s)
-
milli-
-
minute(s)
M
4
British
symbol
-
mach
-
medium (size)
-
mega-
-
currency mark(s)
-
million
-
astronomy Messier catalogue; a catalogue published in 1784, in which 103 nebulae and clusters are listed using a numerical system
M13 is the globular cluster in Hercules
-
Middle
-
physics modulus
-
(in Britain) motorway
the M1 runs from London to Leeds
-
-
mature audience (used to describe a category of film certified as suitable for viewing by anyone over the age of 15)
-
( as modifier )
an M film
-
-
logic the middle term of a syllogism
-
physics mutual inductance
-
chem molar
-
1000 See Roman numerals
abbreviation
m-
5
British
prefix
M'-
6
British
prefix
m-
7
British
prefix
m.
8
British
abbreviation
-
cricket maiden (over)
-
male
-
mare
-
married
-
masculine
M.
9
British
abbreviation
-
Majesty
-
(in titles) Member
-
million
-
Also: M. Monsieur
-
mountain
m
Scientific
Other Word Forms
Noun Inflected Forms
Etymology
Origin of m.10
From the Latin word merīdiēs
Origin of m.11
From the Latin word misce
Origin of M.13
From the Latin word merīdiēs
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The 14 sq m visitor centre, at 3m tall, would stand against her garden fence and rise almost a metre above it.
From BBC ● Aug. 27, 2026
Here, E again represents energy, m is the particle's mass, and c is the speed of light.
From Science Daily ● Mar. 10, 2026
It also suggested that 40,000 candela per sq m - a measure of luminance - may be an "important threshold for the experience of glare being more likely".
From BBC ● Feb. 18, 2026
“I m not sure why he was sanctimonious and agressive when detailing the harvey weinstein allegations,” Epstein wrote. “now watching the overlay , its amazing.”
From Salon ● Feb. 6, 2026
In any case he had no difficulty m proving to the other animals that they were not in reality short of food, whatever the appearances might be.
From "Animal Farm: A Fairy Story" by George Orwell
This is what people say when I first tell them I ’m on the spectrum.
From Scientific American ● Apr. 7, 2022
“I miss him terribly, but not in the state that he was. He’s at peace, and I ‘m OK with that.
From Seattle Times ● Jan. 7, 2022
I ’m wandering the ghostly hallway of the 50th floor, the high rollers’ floor, of what was once the Trump Taj Mahal Hotel and Casino in Atlantic City.
From Washington Post ● Mar. 12, 2018
I ’m not one to switch bags often, so I have just one that serves as many functions as a bag can have.
From The Verge ● Sep. 8, 2017
But I told my girl this morning at breakfast that I ’m doing this for her—so she’ll have a place to stand in society.
From "The Best of Enemies" by Osha Gray Davidson
He is the son of Chris Modrzejewski, a principal at influential lobbying firm M Strategic Communications and well known figure in L.A.
From Los Angeles Times ● Sep. 28, 2026
Most recently, his firm M Strategic Communications took on Lineage as a client in the aftermath of the toxic fire at its cold-storage warehouse in Boyle Heights.
From Los Angeles Times ● Sep. 28, 2026
Leica still builds its cameras largely in Europe, producing just 45 of its top-selling M models a day at its Wetzlar factory, and has posted record sales in four of the past five years.
From The Wall Street Journal ● Sep. 27, 2026
The NTA needs deep structural reform to address recurring failures, but abolishing it is not the answer, said M Jagadesh Kumar, former chairman of India's universities regulator.
From BBC ● Sep. 6, 2026
‘My name begins with an M but sometimes I’m called a name beginning with D. In Italy. You can guess.’
From "The Heart is a Lonely Hunter" by Carson McCullers
Th-That was F-Father's idea of m-making m- m-merry.
From The Voyage of the Hoppergrass by Edmund Lester Pearson
It is hence possible to employ crude cresol, which contains varying quantities of the o-, m-, and p-compounds, in the manufacture of these tanning matters.
From Synthetic Tannins by Georg Grasser
Benzene, for instance, is easily converted into the m-disulphonic acid by gently heating with fuming sulphuric acid; stronger heating converts the m- into the p-disulphonic acid, and at 190° C. the trisulphonic acid is formed.
From Synthetic Tannins by Georg Grasser
Similarly, condensation of different samples of crude cresol containing varying quantities of o-, m-, and p-cresol did not yield end-products sufficiently different to justify describing them in detail.
From Synthetic Tannins by Georg Grasser
Soft- drink vendors hawked their wares as rebel soldiers slouched atop U.S.-made M- 41 tanks, idly awaiting victory.
From Time Magazine Archive
The M- | 11, with a range of about 180 miles, is capable of carrying nuclear warheads.
From Time Magazine Archive
Another major irritant was introduced last August when the U.S. imposed a ban on the sale of sensitive technology to China, claiming Beijing had violated an international agreement by selling M- 11 missiles to Pakistan.
From Time Magazine Archive
Because the M- model transmits no information, the ZM must receive no information.
From The Brain, A Decoded Enigma by Dorin Teodor Moisa
"You knew I was at M-?" he stammered.
From The Man in Lower Ten by Mary Roberts Rinehart
On Thursday at 1 p. m., a service will be held at Acacia Memorial Park in Lake Forest Park, with full military honors.
From Seattle Times ● Jan. 31, 2022
Tours: Tuesday through Saturday from 12:45 p.m. to 3 p. m., subject to availability.
From Washington Post ● Feb. 7, 2019
Lobbying groups for bees remain small, but funding from groups such as Project Apis m., which has contributed $6 million toward bee research since 2006, is helping uncover methods to protect bee populations.
From Washington Times ● Aug. 28, 2016
Danielle Downey, director of operations for the nonprofit group Project Apis m., examines bees on a frame.
From National Geographic ● Jun. 27, 2016
She erected a big white sign in the front yard on which she had carefully painted, in black letters with gold outlines, r. m. walls art studio.
From "The Glass Castle" by Jeannette Walls
Hartnett plays the hapless man well but his naivety could be concealing something more sinister, as it did in the M. Night Shyamalan thriller “Trap.”
From Los Angeles Times ● Oct. 1, 2026
On Thursday morning, Ihor M. -- whose last name has been withheld under Polish privacy law -- entered the Benedictine abbey in Jaroslaw, in southeastern Poland.
From Barron's ● Sep. 26, 2026
His character Boswell Hyde—a “self-possessed pear-shaped young man in his rumpled seersuckers and his jaunty bow tie”—bears a close resemblance to Arthur M. Schlesinger Jr., the Harvard professor and adviser to John F. Kennedy.
From The Wall Street Journal ● Sep. 24, 2026
But Melissa M., a 24-year-old in Canada, told Salon she wouldn’t go even if the event were free.
From Salon ● Sep. 11, 2026
Early in 1939, she began a two-year course at the M. V. Frunze Military Academy.
From "A Thousand Sisters" by Elizabeth Wein
It was a feast day and everyone was celebrating, but M's daughter stayed in her room crying.
From Barron's ● Aug. 11, 2026
“The Disappearing Act” is more of a thought experiment about M’s effort to become “invisible and free.”
From The Wall Street Journal ● Mar. 26, 2026
Woodall and Weisz didn’t discuss M’s relationship with Vladimir during filming.
From Los Angeles Times ● Feb. 26, 2026
The first official, the head of the Military Police’s Investigation and Prisons Branch, said there was no approval to hand over M’s body to his family.
From The Wall Street Journal ● Nov. 19, 2025
Lift me like a little child That I may dwell with— I tapped M's.
From "A Long Way from Chicago" by Richard Peck
"I watched Ms Maharani's videos because I was looking for more information. They gave additional knowledge... so it helped me to think more carefully," she said.
From Barron's ● Oct. 2, 2026
Ms Campbell was not involved in, and did not know of, that conduct.
From BBC ● Oct. 1, 2026
"Ms Meek and the other adults there planted seeds in me that I probably couldn't see at the time, but they became part of the foundation I grew from," he said.
From BBC ● Sep. 9, 2026
BBC Wales reunited Ms Meek and Sam at St Michael's Catholic Primary School in Pontypridd, where she first taught him 25 years ago.
From BBC ● Sep. 9, 2026
I want to know what they’re going to talk about, but I can’t stay out here while Ms.
From "The Wrong Way Home" by Kate O’Shaughnessy
Why is it that the three m’s seem to have so much bipartisan appeal?
From Slate ● Nov. 6, 2020
Ryan, what's the pitching rotation going to look like in a couple years for the m's?
From Seattle Times ● Aug. 18, 2019
Imagine if Ackley had just hesitated, held his ground and then the m's hit into an inning-ending double-play?
From Seattle Times ● Jun. 27, 2011
Among the telltale tidbits scrutinized are the size and slant of the script, how the t's are crossed and whether the m's and n's are round, pointed or wedge-shaped.
From Time Magazine Archive
Who can tell them apart though he tries From her m's Or her e's, N's, or u's As you please In her letters?
From When hearts are trumps by Thomas Winthrop Hall
In Australia, Surfshark’s ping times ranged from 281 to 422 ms, while NordVPN’s latency was lower — between 292 and 406 ms — based on test data.
From Salon ● Mar. 27, 2026
In Australia, Surfshark’s ping times ranged from 229 to 281 ms, while NordVPN’s latency was slightly lower, averaging 210 to 260 ms.
From Salon ● Mar. 27, 2026
When small creatures touch the fine trigger hairs on the outside of the door, it opens inwards within 0.5 ms.
From Science Daily ● Nov. 20, 2024
The coil will be very close to its full current in about ten time constants, or about 25 ms.
From Textbooks ● Aug. 12, 2015
One evening we went to move an attractive young woman who found it charming to spell the name Kim with an h, a y, and two ms.
From "Me Talk Pretty One Day" by David Sedaris
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
