celestial+sphere
31celestial point — noun a point in the heavens (on the celestial sphere) • Hypernyms: ↑point • Hyponyms: ↑apex, ↑solar apex, ↑apex of the sun s way, ↑antapex, ↑apoapsis, ↑point of apoapsis, ↑ …
32Celestial poles — Pole Pole, n. [L. polus, Gr. ? a pivot or hinge on which anything turns, an axis, a pole; akin to ? to move: cf. F. p[^o]le.] 1. Either extremity of an axis of a sphere; especially, one of the extremities of the earth s axis; as, the north pole.… …
33sphere — noun /sfɪə,sfɪr/ a) A regular three dimensional object in which every cross section is a circle; the figure described by the revolution of a circle about its diameter . Though cold and darkness longer hang somewhere, / Yet Phoebus equally lights… …
34celestial — celestially, adv. celestialness, celestiality /seuh les chee al i tee/, n. /seuh les cheuhl/, adj. 1. pertaining to the sky or visible heaven. 2. pertaining to the spiritual or invisible heaven; heavenly; divine: celestial bliss. 3. of or… …
35celestial equator — The great circle of the celestial sphere, in which all points are 90° from the poles. It is the plane of the earth’s equator projected onto the celestial sphere. Also called equinoctial …
36celestial poles — The point on the celestial sphere where the earth’s axis, if projected, would intersect the celestial sphere …
37celestial coordinates — Two coordinates on the surface of the celestial sphere used to determine the position of a celestial body. Two sets of celestial coordinates are in common use: the equinoctial system, in which the coordinates are a declination and an hour circle …
38sphere — I. noun Etymology: Middle English spere globe, celestial sphere, from Anglo French espere, from Latin sphaera, from Greek sphaira, literally, ball; perhaps akin to Greek spairein to quiver more at spurn Date: 14th century 1. a. (1) the apparent… …
39celestial pole — noun one of two points of intersection of the Earth s axis and the celestial sphere • Syn: ↑pole • Hypernyms: ↑celestial point • Instance Hyponyms: ↑north celestial pole, ↑south celestial pole …
40sphere — /sfɪə / (say sfear) noun 1. a. a geometrical figure generated by the revolution of a semi circle about its diameter. b. a round body whose surface is at all points equidistant from the centre. 2. any rounded body approximately of this form; a… …
