/ Dictionary / Index P prohibitionist: Meaning and Definition of Find definitions for: pro•hi•bi•tion•ist Pronunciation: (prō"u-bish'u-nist), [key] — n. a person who favors or advocates prohibition. (cap.) a member of the Prohibition party. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prohibitionist (Thesaurus) prohibition Prohibition party 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