FO
See also: Appendix:Variations of "fo"
Translingual edit
Symbol edit
FO
English edit
Noun edit
FO (plural FOs)
- (aviation) Initialism of first officer.
- Initialism of field officer.
- (logic, computer science) Initialism of first-order logic.
Interjection edit
FO
- (Internet slang, text messaging, vulgar) Initialism of fuck off.