Breadcrumb Home > Dictionary > Index F Fo: Meaning and Definition of Find definitions for: Fo Pronunciation: (fō), [key] — n. Chinese. Buddha (def. 1). fo. Pronunciation: [key] folio. F.O. Pronunciation: [key] field officer. foreign office. forward observer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fo (Thesaurus) f-number foal ✖ Related Content Daily Word Quiz: antebellum Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language