||The"ca (?), n.; pl.
Thecæ (#). [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. (Zoöl.) (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.
||The"ca (?), n.; pl.
Thecæ (#). [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. (Zoöl.) (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.
