- 球面镜 qiúmiànjìng spherical mirrorA mirror whose reflecting surface is part of a sphere, including both concave and convex types
- 球面几何 qiúmiànjǐhé spherical geometry
- 类球面 lèiqiúmiàn spheroida surface or solid body obtained by rotating an ellipse about one of its principal axes, encompassing both prolate and oblate spheroids
- 球面度 qiúmiàndù steradianunit of solid angle in the International System of Units
- 球面几何学 qiúmiànjǐhéxué spherical geometryspherical geometry; the study of geometric figures on the surface of a sphere
- 球面角 qiúmiànjiǎo spherical anglethe angle formed by the intersection of two arcs of great circles on the surface of a sphere