theca
NounSynonyms:
sac
Open English WordNet
Noun (2)thecae
- a case or sheath especially a pollen sac or moss capsuleSynonyms: sacType of covering, natural covering
- outer sheath of the pupa of certain insectsType of sheath, case
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onerousadjective
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Webster's Dictionary (1913)
The′ca noun; pl. Thecae (#).
Origin: 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. Zoology (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.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54