Horizon

ho-ri'znn, n. The apparent junction of the earth and sky. (Astron.) A plane pu ing through the eye of the spectator and at right angles to the vertical at a given place, —called the sensible horizon a plane parallel to the sensible horizon of a — place, and pa ing through the earth's center, called the rational or celestial horizon. [F.. L., and Gr., orig. p. pr. of Gr. horizein, to bound, limit, horos, a boundary.] — Artificial horizon. A level mirror, as the surface of mercury in a shallow ve el, or a plane reflector adiusted to the true level artificiallv. — Dip of the h.~ The vertical ansle contained "between the visible horizon and the sensible horizon. — Hor'izon'tal, a. Pert, to, near, or parallel to, etc.; on a level; measured or contained in a plane of the horizon. — Hor'izon'tally, adv.