资料来源 : pyDict

垂直的,竖的垂线

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Vertical \Ver"ti*cal\, n.
   1. Vertical position; zenith. [R.]

   2. (Math.) A vertical line, plane, or circle.

   {Prime vertical}, {Prime vertical dial}. See under {Prime},
      a.

Vertical \Ver"ti*cal\, a. [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.

资料来源 : WordNet®

vertical
     adj 1: at right angles to the plane of the horizon or a base line;
            "a vertical camera angle"; "the monument consists of
            two vertical pillars supporting a horizontal slab";
            "measure the perpendicular height" [syn: {perpendicular}]
            [ant: {inclined}, {horizontal}]
     2: upright in position or posture; "an erect stature"; "erect
        flower stalks"; "for a dog, an erect tail indicates
        aggression"; "a column still vertical amid the ruins"; "he
        sat bolt upright" [syn: {erect}, {upright}] [ant: {unerect}]

vertical
     n 1: something that is oriented vertically
     2: a vertical structural member as a post or stake; "the ball
        sailed between the uprights" [syn: {upright}]