Endomesoderm: the inner layer formed by an invagination of the middle portion of the primitive band of the embryo, and from which the endoderm and mesoderm are subsequently differentiated.
Endophytic: living within plant or tree tissue, as borers or miners.
Endoskeletal: relating or referring to the endoskeleton.
Endoskeleton: applied to those chitinous processes extending inward into the body cavity from the body wall and serving as attachments for muscles.
Endosternite: that part of the apodeme arising from the intersternal membrane.
Endothorax: the internal framework or processes of the thorax.
Endotoky: is applied to that form of reproduction where the eggs are developed within the body of the mother; see exotoky.
Endotrachea: the inner surface or lining of the trachea: see intima.
Enervis: applied to wings without veins of any kind.
Engraved: see exsculptus.