cyma

n. 反曲线

cy.ma

n.Architecture （名词）【建筑学】
A molding for a cornice, having a partly concave and partly convex curve in profile, used especially in classical architecture.Also called cymatium
反曲线饰：纵断面部分为凹线，部分为凸形的檐口的线脚，尤用在古典建筑中也作 cymatium

来源：
Greek kuma [wave, cyma]
希腊语 kuma [曲线，反曲线]
from kuein [to swell] * see keu…-
源自 kuein [使隆起] *参见 keu…-