Entomology definition of Prognathus September 12, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Prognathus Entomology definition of Prognathus: having the jaws directed forward. Entomology Prognathus definitionPrognathus Entomology explanationPrognathus Entomology meaningReviews & Comments