theca
/ˈθiːkə/noun
(pl.thecae /-siː/)
1- a receptacle, sheath, or cell enclosing an organ, part, or structure, in particular膜; 鞘, 尤指：
1.1
- Anatomy the loose sheath enclosing the spinal cord【剖】（包裹脊索的）鞘。
1.2
- Zoology a cup-like or tubular structure containing a coral polyp【动】（珊瑚的）外壁。
1.3
- Botany either of the lobes of an anther, each containing two pollen sacs【植】药室, 药爿; 囊; 室; （苔藓植物的）孢蒴。
1.4
- （亦作theca folliculi /fəˈlɪkjʊlaɪ/）Anatomy the outer layer of cells of a Graafian follicle【剖】卵泡膜。
派生词
thecate
adjective词源
early 17th cent.: via Latin from Greek thēkē 'case'.