Entry 1 sense Webster, 1913 Disheritance /(dĭs*hĕr"ĭt*ans)/ · Dis·her·it·ance · IPA 01 n. The act of disinheriting or state of being disinherited; disinheritance. 1. The act of disinheriting or state of being disinherited; disinheritance.[Obs.]