MO

See also: Appendix:Variations of "mo"

Translingual

Etymology

Derived from English Macao.

Symbol

MO

1. (international standards) ISO 3166-1 alpha-2 country code for Macau.

   Synonym: MAC (alpha-3)

English

Proper noun

MO

1. Abbreviation of Missouri, a state of the United States of America.
2. (stock ticker symbol) Abbreviation of Philip Morris Companies (now Altria Group).
3. (Judaism) Initialism of Modern Orthodox.

Noun

MO (countable and uncountable, plural MOs)

1. Initialism of modus operandi.

   Alternative forms: m.o., M.O.

   • 1981, James Ellroy, Brown's Requiem, page 207:

     The Big Man is everywhere. He knows my M.O.!!!!

   • 2022, Ling Ma, “Oranges”, in Bliss Montage, New York: Farrar, Straus and Giroux, →ISBN:

     This was her apartment, I gathered, and he was living here. That was his MO. He would leech onto some girl and eventually move into her home.

2. (banking) Initialism of money order.
3. (military, UK) Initialism of medical officer.
4. (chemistry) Initialism of molecular orbital.

Adjective

MO (not comparable)

1. (dentistry) Initialism of mesio-occlusal.
2. (computing) Initialism of magnetooptical.

Further reading

• Jonathon Green (2024) “m.o. n.”, in Green’s Dictionary of Slang

Anagrams

• O&M, O.M., OM, om