Dictionary
the•ca
Pronunciation: (thē'ku), [key]—
n.,
—pl. -caePronunciation: (-sē). [key]
1. a case or receptacle.
2. Bot., Mycol.
a. a sac, cell, or capsule.
b. a sporangium.
3. Anat., Zool.a case or sheath enclosing an organ, structure, etc., as the horny covering of an insect pupa.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.