Entomology definition of Proventriculus September 12, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Proventriculus Entomology definition of Proventriculus: the posterior portion of crop: the gizzard. Entomology Proventriculus definitionProventriculus Entomology explanationProventriculus Entomology meaningReviews & Comments