tegmen

Teg"men, n.; pl. Tegmina. Etym: [L., fr. tegere, tectum, to cover.] 1. A tegument or covering. 2. (Bot.) Defn: The inner layer of the coating of a seed, usually thin and delicate; the endopleura. 3. (Zoöl.) Defn: One of the elytra of an insect, especially of certain Orthoptera. 4. pl. (Zoöl.) Defn: Same as Tectrices.

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