Entry 1 sense Webster, 1913 Ancestral /ăn-sĕs'-trəl/ · An·ces·tral · IPA /ænˈsɛs.təɹ.əl/ 01 a. Of, pertaining to, derived from, or possessed by, an ancestor or ancestors; as, an ancestral estate. 1. Of, pertaining to, derived from, or possessed by, an ancestor or ancestors; as, an ancestral estate.