Category:Vertical

Ver"ti*cal, a. Etym: [cf. F. vertical. See vertex.]

1. Of or pertaining to the vertex; situated at the vertex, or highest Point; directly overhead, or in the zenith; perpendicularly above One. Charity. . . is the vertical top of all religion. Jer. Taylor.

2. Perpendicular to the plane of the horizon; upright; plumb; as, a Vertical line. Vertical angle (astron. & geod.), an angle measured on A vertical circle, called an angle of elevation, or altitude, when Reckoned from the horizon upward, and of depression when downward Below the horizon. -- vertical anthers (bot.), such anthers as stand erect at the top Of the filaments. -- vertical circle (astron.), an azimuth circle. See under azimuth. -- vertical drill, an drill. See under upright. -- vertical fire (mil.), the fire, as of mortars, at high angles of Elevation. -- vertical leaves (bot.), leaves which present their edges to the Earth and the sky, and their faces to the horizon, as in the Australian species of eucalyptus. -- vertical limb, a graduated arc attached to an instrument, as a Theodolite, for measuring vertical angles. -- vertical line. (a) (dialing) a line perpendicular to the horizon. (b) (conic sections) a right line drawn on the vertical plane, and Passing through the vertex of the cone. (c) (surv.) The direction of A plumb line; a line normal to the surface of still water. (d) (geom., Drawing, etc.) A line parallel to the sides of a page or Sheet, in distinction from a horizontal line parallel to the top or Bottom. -- vertical plane. (a) (conic sections) a plane passing through the Vertex of a cone, and through its axis. (b) (projections) any plane Which passes through a vertical line. (c) (persp.) The plane passing Through the point of sight, and perpendicular to the ground plane, And also to the picture. -- vertical sash, a sash sliding up and down. Cf. French sash, under 3d sash. -- vertical steam engine, a steam engine having the crank shaft Vertically above or below a vertical cylinder.

Vertical Ver"ti*cal, n.

1. Vertical position; zenith. [r.]

2. (math.)

Defn: a vertical line, plane, or circle. Prime vertical, prime Vertical dial. See under prime, a.