Entomology definition of Joint September 9, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Joint Entomology definition of Joint: a segment or part between two incisures: an articulation. Entomology Joint definitionJoint Entomology explanationJoint Entomology meaningReviews & Comments