Subscriber login


Forgot your password?

Library card login

Other

FO

Translate FO | into French
Definition of FO

abbreviation

  • Flying Officer.
  • Foreign Office.

FO in other Oxford dictionaries

Definition of FO in the US English dictionary
  |  Cite
Oxford Dictionaries Pro

For Oxford's best resources for writers, plus thesaurus, audio, and 1.9m examples.

Shop for an Oxford dictionary

Find the perfect Oxford dictionary for you in our online shop.
SHOP NOW ►

Word of the day

cur

/ kəː /
noun
an aggressive or unkempt dog …