/ Dictionary / Index P progenitor: Meaning and Definition of Find definitions for: pro•gen•i•tor Pronunciation: (prō-jen'i-tur), [key] — n. a biologically related ancestor: a progenitor of the species. a person or thing that first indicates a direction, originates something, or serves as a model; predecessor; precursor: the progenitor of modern painting. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: progenitor (Thesaurus) progenitive progeny Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language