Entomology definition of Exochorium September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Exochorium Entomology definition of Exochorium: Heteroptera; a narrow marginal part of the hemelytra. Entomology Exochorium definitionExochorium Entomology explanationExochorium Entomology meaningReviews & Comments