theca

noun the·ca \ˈthē-kə\

plural the·cae \ˈthē-ˌsē, -ˌkē\

Definition of THECA

: an enveloping sheath or case of an animal or animal part

— the·cal \ˈthē-kəl\ adjective

New Latin, from Greek thēkē case — more at tick

First Known Use: circa 1666

Medical Dictionary

noun the·ca \ˈthē-kə\

plural the·cae \ˈthē-ˌsē, -ˌkē\

: an enveloping case or sheath (as the theca folliculi) of an anatomical part

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