/ Dictionary / Index P perspicacity: Meaning and Definition of Find definitions for: per•spi•cac•i•ty Pronunciation: (pûr"spi-kas'i-tē), [key] — n. keenness of mental perception and understanding; discernment; penetration. keen vision. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: perspicacity (Thesaurus) perspicacious perspicuity Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language