/ Dictionary / Index P Pat. Off.: Meaning and Definition of Find definitions for: Pat. Off. Pronunciation: [key] Patent Office. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pato patois Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language