Entomology definition of Ancestral September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Ancestral Entomology definition of Ancestral: primitive; inherited from an earlier form or ancestor. Ancestral Entomology explanationAncestral Entomology meaningEntomology Ancestral definitionReviews & Comments