mo

1 of 6

abbreviation (1)

month

Mo

2 of 6

abbreviation (2)

1
Missouri
2
Monday

Mo

3 of 6

symbol

molybdenum

MO

4 of 6

noun

ˈem-ˈō How to pronounce MO (audio)
often not capitalized
: modus operandi

MO

5 of 6

abbreviation (3)

1
mail order
2
medical officer
3
Missouri
4
money order

-mo

6 of 6

noun suffix

—after numerals or their names to indicate the number of leaves made by folding a sheet of paper
sixteenmo
16mo

Examples of mo in a Sentence

Noun two thieves with very different MOs

Word History

Etymology

Noun suffix

duodecimo

First Known Use

Noun

1940, in the meaning defined above

Time Traveler
The first known use of mo was in 1940

Dictionary Entries Near mo

-mo

mo

moa

See More Nearby Entries 

Cite this Entry

“Mo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mo. Accessed 30 Nov. 2024.

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Medical Definition

mo

1 of 3 abbreviation
month

Mo

2 of 3 symbol
molybdenum

MO

3 of 3 abbreviation
medical officer

Legal Definition

MO

abbreviation
modus operandi

More from Merriam-Webster on mo

Britannica.com: Encyclopedia article about mo

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