equant
1Equant — (or Punctum aequans ) is a mathematical concept developed by Claudius Ptolemy in the 2nd century AD to account for the observed motion of heavenly bodies.The equant point, indicated in the diagram by the • , is placed so that it is directly… …
2ÉQUANT — Concept astronomique de l’ère précopernicienne, introduit vers 130 par Claude Ptolémée pour expliquer les variations périodiques d’éclat des planètes Mars et Jupiter. Déjà, pour rendre compte de l’inégalité des saisons, Ptolémée avait été amené à …
3Equant — E quant, n. [L. aequans, antis, p. pr. of aequare: cf. F. [ e]quant. See {Equate}.] (Ptolemaic Astron.) A circle around whose circumference a planet or the center of ann epicycle was conceived to move uniformly; called also {eccentric equator}.… …
4Equant — Orange Business Services Logo de Orange Business Services Création 2006 Forme juridique marque commerciale uniquement …
5equant — /ˈikwənt/ (say eekwuhnt) noun Astronomy (in the Ptolemaic system) a point from which a line is drawn to a planet, halfway along which is the centre of the planet s deferent, the planet or the centre of the planet s epicycle being conceived to… …
6equant — ˈēkwənt, ˌkwant adjective Etymology: Latin aequant , aequans present participle of aequare : of, being, or relating to a crystal having equal or nearly equal diameters in all directions equant grain equant habit …
7equant — /ee kweuhnt, ee kwant/, adj. (of a crystal) having all axes of the same length (opposed to anisometric). [ < L aequant , s. of aequans, prp. of aequare; see EQUATE] * * * …
8équant — (é kouan) s. m. Terme de l ancienne astronomie. Cercle dont le centre était celui des mouvements réguliers. ÉTYMOLOGIE Lat. aequans, qui égale …
9equant — [ i:kwənt] noun Astronomy, historical (in the Ptolemaic system) an imaginary circle that reconciles the planetary movements with the hypothesis of uniform circular motion. Origin C16: from L. aequant , aequare make equal …
10eccentric equator — Equant E quant, n. [L. aequans, antis, p. pr. of aequare: cf. F. [ e]quant. See {Equate}.] (Ptolemaic Astron.) A circle around whose circumference a planet or the center of ann epicycle was conceived to move uniformly; called also {eccentric… …