tegmen
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teg·men
(tĕg′mən)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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
tegmen
(ˈtɛɡmən)n, pl -mina (-mɪnə)
1. (Zoology) either of the leathery forewings of the cockroach and related insects
2. (Botany) the delicate inner covering of a seed
3. (Botany) any similar covering or layer
[C19: from Latin: a cover, variant of tegimen, from tegere to cover]
ˈtegminal adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
teg•men
(ˈtɛg mən)n., pl. -mi•na (-mə nə)
1. a covering or integument, esp. of a plant or animal.
2. the delicate inner coat of a seed.
3. either of a pair of leathery forewings extending over the hind wings in certain insects.
[1800–10; < Latin: covering (also tegumen, tegimen) =teg(ere) to cover + -men n. suffix]
teg′mi•nal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.