Entomology definition of Predaceous September 12, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Predaceous Entomology definition of Predaceous: applied to insects that live by preying upon other organisms. Entomology Predaceous definitionPredaceous Entomology explanationPredaceous Entomology meaningReviews & Comments