Entomology definition of Chorion September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Chorion Entomology definition of Chorion: the shell or covering membrane of an insect egg. Chorion Entomology explanationChorion Entomology meaningEntomology Chorion definitionReviews & Comments