/ˈθiːkə/
OriginFrom New Latin, from Latin thēca, from Ancient Greek θήκη (thḗkē, “a case, box, receptacle”), from τίθημι (títhēmi, “put, set, place”). Doublet of tay.
- The pollen-producing organ usually found in pairs and forming an anther.
- The theca folliculi: the twin layers of cells surrounding the basal lamina of an ovarian follicle.
- The thecal sac: the portion of the dura mater that surrounds the spinal cord and the cauda equina.
- The membrane complex enveloping the cells of certain plankton including diatoms and dinoflagellates.
- The calcareous wall of a corallite, the exoskeleton of a coral polyp.
- A sporangium: a spore case.
- A case for the corporal cloth used in the Eucharist.
Formsthecas(plural) · thecae(plural)