/ Dictionary / Index P plenitude: Meaning and Definition of Find definitions for: plen•i•tude Pronunciation: (plen'i-td", -tyd"), [key] — n. fullness or adequacy in quantity, measure, or degree; abundance: a plenitude of food, air, and sunlight. state of being full or complete. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: plenitude (Thesaurus) plenish plenitudinous Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language