vertex [ˈvəːtɛks] (pl. vertices -tɪsiːz 或 vertexes)
the highest point; the top or apex 最高点;顶点 ■(Anatomy)the crown of the head (剖)颅顶,头顶;头冠
(Geometry)each angular point of a polygon, polyhedron, or other figure (几何)(多边形、多面体或其他图形的角的)顶点 ■a meeting point of two lines that form an angle (两线相交成角时的)相交点 ■the point at which an axis meets a curve or surface (轴与曲线或平面相交时的)点
语源
late Middle English: from Latin, whirlpool, crown of a head, vertex', from vertere 'to turn'