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n. pl. the·cae (-sē′, -kē′)
A case, covering, or sheath, such as the covering of the pollen sacs of an anther or the thick cell wall of certain dinoflagellates.
the′cal (-kəl) adj.
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.
n, pl -cae (-siː)
1. (Botany) botany an enclosing organ, cell, or spore case, esp the capsule of a moss
2. (Zoology) zoology a hard outer covering, such as the cup-shaped container of a coral polyp
[C17: from Latin thēca, from Greek thēkē case; related to Greek tithenai to place]
ˈthecal, ˈthecate adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
n., pl. -cae (-sē).
1. a case or sheath enclosing an animal organ, structure, etc., as the horny covering of an insect pupa.
2. a sac, cell, capsule, or sporangium of a plant or mushroom.
[1655–65; < Latin thēca < Greek thḗkē case, cover, akin to tithénai to place, put]
the′cal, the′cate (-kɪt, -keɪt) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||theca - a case or sheath especially a pollen sac or moss capsule|
|2.||theca - outer sheath of the pupa of certain insects|
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
n. teca, envoltura o capa que actúa esp. como protectora de un órgano.
English-Spanish Medical Dictionary © Farlex 2012