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theca |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Theca \The"ca\, n.; pl {Thec[ae]}. [L., fr Gr ? a case to put anything in See {Tick} a cover.] 1. A sheath; a case; as the theca, or cell, of an anther; the theca, or spore case, of a fungus; the theca of the spinal cord. 2. (Zo["o]l.) a The chitinous cup which protects the hydranths of certain hydroids. b The more or less cuplike calicle of a coral. c The wall forming a calicle of a coral. From WordNet r 1.6 [wn]: theca n 1: a case or sheath especially a pollen sac or moss capsule [syn: {sac}] 2: outer sheath of the pupa of certain insects
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