Entomology definition of Truncus September 14, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Truncus Entomology definition of Truncus: the trunk or thorax. Entomology Truncus definitionTruncus Entomology explanationTruncus Entomology meaningReviews & Comments