/ Dictionary / Index A authorize: Meaning and Definition of Find definitions for: au•thor•ize Pronunciation: (ô'thu-rīz"), [key] — -ized, -iz•ing. to give authority or official power to; empower: to authorize an employee to sign purchase orders. to give authority for; formally sanction (an act or proceeding): Congress authorized the new tax on tobacco. to establish by authority or usage: an arrangement long authorized by etiquette books. to afford a ground for; warrant; justify. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: authorize (Thesaurus) authorization authorized 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