/ Dictionary / Index P prosperity: Meaning and Definition of Find definitions for: pros•per•i•ty Pronunciation: (pro-sper'i-tē), [key] — pl. -ties. a successful, flourishing, or thriving condition, esp. in financial respects; good fortune. prosperous circumstances. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prosperity (Thesaurus) prosper Prospero Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language