/ Dictionary / Index A ancestress: Meaning and Definition of Find definitions for: an•ces•tress Pronunciation: (an'ses-tris or, esp. Brit., -su-stris), [key] — n. a woman from whom a person is descended. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ancestress (Thesaurus) ancestral ancestry Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language