/ Dictionary / Index S sororate: Meaning and Definition of Find definitions for: so•ror•ate Pronunciation: (sôr'u-rāt", sōr'-), [key] — n. subsequent or concurrent marriage with a wife's sister. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sororal sororicide Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language