Entomology definition of Upper sector of triangle September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Upper sector of triangle Entomology definition of Upper sector of triangle: in Odonata, = cubitus 1 (Comst.). Entomology Upper sector of triangle definitionUpper sector of triangle Entomology explanationUpper sector of triangle Entomology meaningReviews & Comments