Entomology definition of Epipygium September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Epipygium Entomology definition of Epipygium: the dorsal arch of the last abdominal segment. Entomology Epipygium definitionEpipygium Entomology explanationEpipygium Entomology meaningReviews & Comments