(Anatomy)denoting a joint in which one element rotates on its own axis (e.g. the atlas vertebra) (剖)(关节)车轴状的,滑车状的
(Geometry)denoting a curve traced by a point on a radius of a circle rotating along a straight line or another circle (a cycloid, epicycloid, or hypocycloid) (几何)(次)摆线的
(Zoology)having or denoting a form of mollusc shell which is conical with a flat base, like a top shell (动)(螺壳)圆锥形的
noun
a trochoid curve (次)摆线
a trochoid joint 车轴关节,旋转关节
派生 trochoidal adjective 语源
early 18th cent.: from Greek trokhoeidēs 'wheel-like', from trokhos 'wheel'