Entomology definition of Tri- September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Tri- Entomology definition of Tri-: three; a combining form. Entomology Tri- definitionTri- Entomology explanationTri- Entomology meaningReviews & Comments