/ Dictionary / Index P platitudinarian: Meaning and Definition of Find definitions for: plat•i•tu•di•nar•i•an Pronunciation: (plat"i-td"n-âr'ē-un, -tyd"-), [key] — n. a person who frequently or habitually utters platitudes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: platitudinarian (Thesaurus) platitudinal platitudinize Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language