Phys. [Irregularly f. Gr. ἐν in + δέρ-ος, δέρ-μα skin.] A term introduced by Prof. Huxley to denote the inner derm or true skin, or any homologous structure. Opposed to ECDERON. Hence Enderonic a.
1859. Huxley, in Todd, Cycl. Anat., V. 476/1. The entire internal (deep) area of metamorphosis, [I call] the Enderon.
1872. Mivart, Elem. Anat., 237. The name Enderon is applied to the deeper or dermal layer wherever situate.
