/ Dictionary / Index P prepotency: Meaning and Definition of Find definitions for: pre•po•ten•cy Pronunciation: (prē-pōt'n-sē), [key] — n. Genetics. the ability of one parent to impress its hereditary characters on its progeny because it possesses more homozygous, dominant, or epistatic genes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prepotency (Thesaurus) preposterous prepotent Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language