/ Dictionary / Index P pleno jure*: Meaning and Definition of Find definitions for: ple•no ju•re Pronunciation: (plā'nō y're Eng. plē'nō j&oobrever'ē), [key] — Latin. Latin. with full authority. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plenitudinous plenteous Related Content Daily Word Quiz: serendipity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language