Found 2 items, similar to theca.
English → English (WordNet) Definition: theca 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 [also: thecae (pl)]
English → English (gcide) Definition: Theca 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. [1913 Webster] 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. [1913 Webster]