Entomology definition of Deorsum September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Deorsum Entomology definition of Deorsum: downward. Deorsum Entomology explanationDeorsum Entomology meaningEntomology Deorsum definitionReviews & Comments