aberrational ellipse beyzi-ye birâheši Fr.: ellipse d'aberration The → locus of points on the → celestial sphere occupied by a star during the annual → revolution of the → Earth about the → Sun due to → annual aberration. annual aberration. → aberrational; → ellipse. |
ellipse beyzi (#) Fr.: ellipse The locus of a point the sum of whose distances from two fixed points is constant. From O.Fr. ellipse, from L. ellipsis "ellipse," also, "a falling short, deficit," from Gk. elleipsis "an omission," from el-, variant of en-, + leip-, stem of leipein "to leave" + suffix -sis. Beyzi, from Ar. |
parallactic ellipse beyzi-ye didgašt Fr.: ellipse de parallaxe The path on the sky of the apparent position of a star as seen from the Earth, due to the Earth's annual motion around the Sun. → parallactic; → ellipse. |