n. pl. teg·mi·na (-mə-nə) A covering or integument, especially: a. The thin plate of bone that covers the middle ear. b. The tough leathery forewing of certain insects. c. The inner layer of a seed coat. [Latin tegimen, tegmen, covering, from tegere, to cover; see (s)teg- in the Appendix of Indo-European roots.] |
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