/ Dictionary / Index P parthenogenesis: Meaning and Definition of Find definitions for: par•the•no•gen•e•sis Pronunciation: (par"thu-nō-jen'u-sis), [key] — n. Biol. development of an egg without fertilization. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: parthenogenesis (Thesaurus) parthenocarpy Parthenon Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language