Entomology definition of Decumbent -ous September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Decumbent -ous Entomology definition of Decumbent -ous: sloping gradually downward. Decumbent -ous Entomology explanationDecumbent -ous Entomology meaningEntomology Decumbent -ous definitionReviews & Comments