/ Dictionary / Index A appro: Meaning and Definition of Find definitions for: ap•pro Pronunciation: (ap'rō), [key] — n. Brit. Informal. (of a purchase) approval: on appro. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: appro (Thesaurus) apprize approach Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language