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theca

theca · thecas · thecae

Any of several external cases or sheathsAny of several external cases or sheaths.: The pollen-producing organ usually found in pairs and forming an anther.

/ˈθiːkə/

Значення

значень: 7

Any of several external cases or sheaths.
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.

Ще визначення

outer sheath of the pupa of certain insects
a case or sheath especially a pollen sac or moss capsule

Походження

From New Latin, from Latin thēca, from Ancient Greek θήκη (thḗkē, “a case, box, receptacle

From New Latin, from Latin thēca, from Ancient Greek θήκη (thḗkē, “a case, box, receptacle”), from τίθημι (títhēmi, “put, set, place”). Doublet of tay.

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