pendentive

n. 穹隅

pen.den.tive

n.Architecture （名词）【建筑学】
A triangular section of vaulting between the rim of a dome and each adjacent pair of the arches that support it.
弧三角拱，方墙四角圆穹顶支承拱：拱形结构的三角形部分，位于顶穹边缘和每对支撑此拱形结构的相邻圆拱之间

来源：
French pendentif
法语 pendentif
from Latin pendôns pendent- [hanging] [present participle of] pendôre [to hang] * see (s)pen-
源自 拉丁语 pendôns pendent- [悬挂的] [] pendôre的现在分词 [悬挂] *参见 (s)pen-