mo
noun
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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
-
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
-
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:
“Duidín lásta, tá mise ró-ghasta / Ní fheicfidh tú mise i mo sheasamh ró-fhada” just doesn’t roll off the tongue quite as easily.
From Los Angeles Times ● May 26, 2022
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
Seem lak all de rest uh y’all put tuhgether oughta be able tuh scrape up two mo’.
From "Their Eyes Were Watching God" by Zora Neale Hurston
On his first day as prime minister, Burnham was already posting videos on TikTok of him running with Sir Mo Farah and appearing on influencer Max Klymenko's "career ladder" podcast.
From BBC ● Sep. 16, 2026
California craft beer pioneer Stone Brewing will close three Escondido locations and lay off hundreds of workers as production moves to Paso Robles and Kansas City, Mo.
From Los Angeles Times ● Aug. 21, 2026
Whether he is pulling a pint, tossing a builder's helmet in the air or running with Olympic medallist Mo Farah, the UK's new prime minister Andy Burnham has embraced social media with a deft touch.
From Barron's ● Aug. 16, 2026
In recent weeks, officers have broadened their approach to make more arrests near gates and ticket counters at airports from San Francisco to Miami and Kansas City, Mo.
From The Wall Street Journal ● Aug. 6, 2026
I heard Mo in my head: They came here to start afresh, and this is how it ended.
From "City of the Plague God" by Sarwat Chadda
There needs to be a "different MO", he said.
From BBC ● Sep. 11, 2026
Altria MO 0.59%increase; green up pointing triangle posted higher sales in the first quarter as higher pricing offset lower volumes.
From The Wall Street Journal ● Apr. 30, 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
“Oh, big surprise. Maddie’s running away! That’s your MO anytime you come across something you don’t know how to handle.”
From "From Twinkle, with Love" by Sandhya Menon
“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
Poor St. Louis, mo. everyone has a tear or two for gritty cities facing hard times--for the Detroits, the Clevelands--but who spares a thought for the elegant dowager reduced to reusing tea bags?
From Time Magazine Archive
Slip Near Los Angeles Mr. & Mrs. A. J. Tarpley were motoring with their two daughters, Marjorie, 3 mo., and Catherine, 2.
From Time Magazine Archive
O, may it become more and more refined until nothing shall remain but perfect purity. 2nd mo. 11th day.—First day evening Deborah came down and sat with us.
From The Life and Work of Susan B. Anthony (Volume 1 of 2) Including Public Addresses, Her Own Letters and Many From Her Contemporaries During Fifty Years by Ida Husted Harper
In Independence, Mo., one city councilman lost a recall vote Tuesday by 68% due to his support for a data center.
From Los Angeles Times ● Sep. 7, 2026
With one child and another on the way, the couple has since sold that house and purchased another in St. Louis, Mo. They moved to the more-affordable city to be closer to family.
From MarketWatch ● Sep. 1, 2026
But the residents of Nodaway County, Mo., are answering rationally when they object to the proposed data center he describes.
From The Wall Street Journal ● Aug. 26, 2026
Production of the Stone portfolio will gradually transition to Firestone Walker’s brewery in Paso Robles, Calif., and Duvel USA’s Boulevard brewery in Kansas City, Mo., the joint statement said.
From Los Angeles Times ● Aug. 21, 2026
“Something is really, really wrong,” said Mo. Then she said, in a higher-pitched panicky voice, “We have to get out of here.”
From "The Graveyard Book" by Neil Gaiman
Winkler’s essential m.o. in life, we learn, is to try to make everyone love him because his Holocaust survivor parents didn’t.
From New York Times ● Oct. 24, 2023
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
“You saw exactly the m.o. of what David would love to have,” Helton said.
From Los Angeles Times ● Nov. 28, 2017
Yeah, that’s always been our m.o., is that we always do stuff we like.
From Slate ● Mar. 16, 2015
The fact that a quartet of such caliber signed on to this dreck would be surprising if Netflix’s M.O. weren’t trapping great actors in middling movies.
From Salon ● Sep. 2, 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
Lyon to tick off his name on the nominal roll, and then approached the M.O.
From The Fifth Battalion Highland Light Infantry in the War 1914-1918 by F. L. Morrison
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.
