/ Dictionary / Index S semidominance: Meaning and Definition of Find definitions for: sem•i•dom•i•nance Pronunciation: (sem"ē-dom'u-nuns, sem"ī-), [key] — n. Genetics. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. semidomesticated semidouble Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language