Entomology definition of Third posterior cell September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Third posterior cell Entomology definition of Third posterior cell: in Diptera, = 2d medial 2 (Comst.). Entomology Third posterior cell definitionThird posterior cell Entomology explanationThird posterior cell Entomology meaningReviews & Comments