the branch of astronomy dealing with the determination of the positions of celestial bodies on the celestial sphere.
noun, Mathematics. 1. Usually, spherical coordinates. any of three coordinates used to locate a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes. spherical coordinate Any of a set of coordinates in a three-dimensional system for locating points in space by means of […]
noun, Mathematics. 1. the difference between the sum of the angles of a spherical triangle and two right angles.
noun 1. the branch of geometry that deals with figures on spherical surfaces. spherical geometry noun 1. the branch of geometry concerned with the properties of figures formed on the surface of a sphere spherical geometry The geometry of circles, angles, and figures on the surface of a sphere.
- Spherical lens
spherical lens n. Abbr. sph A lens in which all refracting surfaces are spherical.