mo
noun
Jump To:
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mo
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Mo
Momolybdenum.
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MO
MOabbreviationmethod of operation.
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-mo
-moa suffix occurring in a series of compounds that describe book sizes according to the number of leaves formed by the folding of a single sheet of paper.
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mo.
mo.abbreviationmonth.
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Mo.
Mo.abbreviationMissouri.
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m.o.
m.o.abbreviationmail order.
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M.O.
M.O.abbreviationmail order.
mo
1 American
[moh]
/ moʊ /
noun
Informal.
Mo
2
American
Symbol, Chemistry.
MO
3
American
abbreviation
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method of operation.
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Missouri (approved especially for use with zip code).
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mode of operation.
-mo
4
American
mo.
5
American
abbreviation
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mos
plural
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month.
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months.
Mo.
6
American
abbreviation
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Missouri.
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Monday.
m.o.
7
American
abbreviation
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mail order.
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modus operandi.
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money order.
M.O.
8
American
abbreviation
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mail order.
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manually operated.
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Medical Officer.
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method of operation.
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mode of operation.
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modus operandi.
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money order.
MO
1
British
abbreviation
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Missouri
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Medical Officer
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modus operandi
mo
2
British
/ məʊ /
m.o.
3
British
abbreviation
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mail order
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money order
Mo
4
British
symbol
Mo.
5
British
abbreviation
-mo
6
British
suffix
mo
7
British
abbreviation
Usage
What else does MO mean? MO—it's a multifunctional set of letters. MO is commonly used as an abbreviation for modus operandi, meaning “mode of operating or working.” It’s also commonly a postal abbreviation for Missouri. You may not always encounter mo in uppercase letters in informal contexts in digital communication. So, two other widespread, popular uses of mo you may encounter are: Mo, a guy’s name, and mo, a dialectical pronunciation of more. In the U. K. and other English-speaking places around the world, mo is a slang shortening of the word moment. How is MO pronounced?[ em-oh ] or [ moh ]What are some variants of MO?or M. O. or mo' or moWhat are some other words related to MO?
Etymology
Origin of mo1
By shortening
Origin of -mo4
Combining form extracted from duodecimo
Vocabulary lists containing mo
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:
I have the Tongan seal and motto “Ko e ʻOtua mo Tonga ko hoku tofiʻa,” which means “God and Tonga are my inheritance,” tattooed on my left arm.
From Los Angeles Times ● Apr. 5, 2023
Going on hour 17 of no power with a 1 mo old.
From Seattle Times ● Oct. 25, 2021
It can do all the modes that matter in terms of 4K and slow mo and handles them all super well.
From The Verge ● Sep. 21, 2021
Looks like they’re ganging up trying to make an honest man out of me, a lo mo, natural born hustler!
From The New Yorker ● Dec. 2, 2019
“Well, ef I lives twell night hit’s gwine to be two bits mo dey takin out of town, dat’s sho.”
From "The Sound and the Fury" by William Faulkner
“Loudoun was called the breadbasket of the Revolution,” said Denise Mo, executive director of the Loudoun Heritage Farm Museum.
From The Wall Street Journal ● Jul. 2, 2026
But this turn doesn’t define Mo or his overall arc, which tightly focuses on the constant hustle, creativity and sense of humor required to survive as an immigrant in this country.
From Salon ● Jul. 1, 2026
The Timberwolves will receive Mo Gueye from Chicago but are expected to waive the third-year forward.
From Los Angeles Times ● Jun. 23, 2026
Zanardi found a seat back in Cart in 2001, driving for a team set up by his former Ganassi engineer Mo Nunn.
From BBC ● May 2, 2026
I should have listened more closely to Mo when he'd rambled on about Mesopotamian mythology.
From "City of the Plague God" by Sarwat Chadda
The company’s shares change hands for 21 times expected earnings, a 70% premium to Altria MO -0.21%decrease; down pointing triangle and BAT.
From The Wall Street Journal ● Jul. 9, 2026
Rory turns into sandworm fodder the second he admits his slimy MO, suggesting that the smarmy leech was beyond redemption.
From Salon ● Sep. 9, 2024
But the specific deal with Alonso, a free agent after this season, would be a departure from the Mariners’ typical MO under Jerry Dipoto.
From Seattle Times ● Jun. 1, 2024
Indeed, her MO is a little closer to Buster Keaton’s.
From Los Angeles Times ● Oct. 4, 2023
He knew there was • MO • no shame in crying.
From "The Dead and the Gone" by Susan Beth Pfeffer
“It’s key that need for reform is understood, but we don’t need 6 mo. of study,” he wrote.
From New York Times ● Oct. 22, 2020
Coursers competed for three stakes: the Sapling, for hounds under 16 mo.; the Futurity, for those under 22 mo.; the Derby, an all-age event which is called the Waterloo at the Coursing Association's autumn meet.
From Time Magazine Archive
At the age of 18 mo. the prodigy, referred to only as "K," could converse fluently.
From Time Magazine Archive
Net income, first half 158,696 Net income, 18 mo. ended December 275,622 Reo Motor Car Co.
From Time Magazine Archive
At a meeting held 12th mo. 14th, the Committee appointed on the 9th submitted a form of Constitution, which was read and adopted.
From History of Woman Suffrage, Volume I by Stanton, Elizabeth Cady
After the 2014 death of Michael Brown in Ferguson, Mo., and other high-profile police killings, activists demanded that departments adopt the cameras.
From The Wall Street Journal ● Jul. 17, 2026
The elder Iwerks met fellow artist Walt Disney when both men were teenagers working at a Kansas City, Mo., art studio.
From Los Angeles Times ● Jul. 12, 2026
Chris Tinen, a customer in St. Louis, Mo., said AI-driven cuts to insurance agents’ compensation were a painful necessity.
From The Wall Street Journal ● Jul. 8, 2026
Kyle Scheele, a 40-year-old from Springfield, Mo., came to the U.K. with his wife for a five-day hike through the Cotswolds, prepared for rainy days in the 60s and 70s.
From The Wall Street Journal ● Jun. 26, 2026
Fenoglio looked pleadingly at Mo. "I could just follow you, inconspicuously. How would he know who I am? I want to find out if he really looks the way I imagined him, that’s all."
From "Inkheart" by Cornelia Funke
And causing other people’s pain is not in my m.o.
From Salon ● May 2, 2019
Its m.o., sour beers and Neapolitan-style pizza, continues at the new Fremont location, but there will be an extensive fresh-pasta menu, sandwiches, tacos and a full bar with a biodynamic wine program.
From Seattle Times ● Dec. 4, 2017
“That's kind of the m.o. of who wins ballgames,” USC Coach Clay Helton said.
From Los Angeles Times ● Nov. 15, 2016
Wouldn’t that have been squarely within the Fellowes m.o.?
From New York Times ● Jan. 31, 2016
Yeah, that’s always been our m.o., is that we always do stuff we like.
From Slate ● Mar. 16, 2015
Fusing couture-level spectacle with crowd-pleasing performance has long been Jacobs’ M.O.
From Salon ● Mar. 27, 2026
"I feel like in my career I've won on tough golf courses generally, so that's my M.O., I would say," said 2025 Masters runner-up Rose, who led by a shot after an opening-round 62.
From BBC ● Jan. 31, 2026
Bending Spoons’ M.O. is apparent from even a cursory look at its portfolio and record.
From Slate ● Jan. 23, 2026
With its slow pacing, shaky handheld cameras, dishwater cinematography and unnervingly extreme closeups, it feels more like an intense indie drama than a whimsical tale of a robber with a peculiar M.O.
From The Wall Street Journal ● Oct. 9, 2025
Though Mac protested he could quite well walk, the M.O. insisted on putting him on a stretcher, giving orders to the bearers to take him without delay to the hospital life-boats.
From The Tale of a Trooper by Mackenzie, Clutha N. (Clutha Nantes)
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.
