theca

Noun
Synonyms: sac

WordNet 3.0

Noun (2)

  1. a case or sheath especially a pollen sac or moss capsuleSynonyms: sac
  2. outer sheath of the pupa of certain insects
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Webster's Dictionary (GCIDE)

Theca \The"ca\, n.; pl. Thecae. [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. [1913 Webster]

2.(Zool.) (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. [1913 Webster]

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