Entomology definition of Facial angle September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Facial angle Entomology definition of Facial angle: the angle formed by the junction of the face and vertex. Entomology Facial angle definitionFacial angle Entomology explanationFacial angle Entomology meaningReviews & Comments