/ Dictionary / Index P partheno-: Meaning and Definition of Find definitions for: partheno- Pronunciation: [key] a combining form meaning “without fertilization,” used in the formation of compound words: parthenogenesis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Parthenia parthenocarpy 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