tegmen noun. ['tɛgmɛn] Pl. -mina [-mɪnǝ]. E19.
[Latin = covering, from tegere to cover.]
1. Entomology. A covering; esp. a sclerotized forewing serving to cover the hindwing in the orders Orthoptera, Dictyoptera, etc. Cf. ELYTRON. E19.
2. Anatomy. A covering structure or roof; esp. (more fully tegmen tympani ['tɪmpǝnʌɪ]) a plate of thin bone forming the roof of the middle ear, a part of the temporal bone. L19.

[TahlilGaran] English Dictionary ▲