‖n.; pl. Tegmina [ L., fr. tegere, tectum, to cover. ] 1. A tegument or covering. [ 1913 Webster ]

2. (Bot.) The inner layer of the coating of a seed, usually thin and delicate; the endopleura. [ 1913 Webster ]

3. (Zool.) One of the elytra of an insect, especially of certain Orthoptera. [ 1913 Webster ]

4. pl. (Zool.) Same as Tectrices. [ 1913 Webster ]

a. (Biol.) Of or pertaining to a tegument or tegmentum; as, the tegmental layer of the epiblast; the tegmental cells of the taste buds. [ 1913 Webster ]

‖n.; pl. Tegmenta [ L., a covering. ] (Anat.) A covering; -- applied especially to the bundles of longitudinal fibers in the upper part of the crura of the cerebrum. [ 1913 Webster ]