Entomology definition of Amnion September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Amnion Entomology definition of Amnion: the inner of the two membranes enveloping the embryo. Amnion Entomology explanationAmnion Entomology meaningEntomology Amnion definitionReviews & Comments