celestial+sphere
61celestial equator — imaginary circle which separates the celestial sphere into two equal halves …
62celestial horizon — The great circle of the celestial sphere, equidistant from the zenith and the nadir. It is the intersection of the sensible and rational horizons at infinity. Its plane passes through the center of the earth …
63celestial pole — noun Astronomy the point on the celestial sphere directly above either of the earth s geographic poles, around which the stars appear to rotate …
64celestial equator — celes′tial equa′tor n. astron. naut. navig. the great circle of the celestial sphere, lying in the same plane as the earth s equator • Etymology: 1870–75 …
65celestial pole — celes′tial pole′ n. astron. each of the two points in which the extended axis of the earth cuts the celestial sphere and about which the stars seem to revolve • Etymology: 1900–05 …
66celestial equator — /səˌlɛstiəl əˈkweɪtə/ (say suh.lesteeuhl uh kwaytuh) noun Navigation, Astronomy a great circle of the celestial sphere, the plane of which is perpendicular to the axis of the earth …
67celestial globe — /səˌlɛstiəl ˈgloʊb/ (say suh.lesteeuhl glohb) noun Astronomy a model of the celestial sphere, on which the relative positions of the stars may be indicated without distortion …
68celestial horizon — noun the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth • Syn: ↑horizon • Hypernyms: ↑great circle …
69celestial coordinate — noun : a member of any system of coordinates used for locating a point on the celestial sphere compare ecliptic coordinate, equator system of coordinate, galactic coordinate, horizon coordinate …
70Sphere — Sphere, n. [OE. spere, OF. espere, F. sph[ e]re, L. sphaera,. Gr. ??? a sphere, a ball.] 1. (Geom.) A body or space contained under a single surface, which in every part is equally distant from a point within called its center. [1913 Webster] 2.… …
