/ Dictionary / Index P prof: Meaning and Definition of Find definitions for: prof Pronunciation: (prof), [key] — n. Informal. professor. Prof. Pronunciation: [key] Professor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prof (Thesaurus) proestrus profamily Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language