/ Dictionary / Index P prohibitory: Meaning and Definition of Find definitions for: pro•hib•i•to•ry Pronunciation: (prō-hib'i-tôr"ē, -tōr"ē), [key] — adj. prohibitive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prohibitory (Thesaurus) prohibitive prohormone Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language