Found 1 items, similar to Vertical line.
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Definition: Vertical line
, 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.
2. Perpendicular to the plane of the horizon; upright; plumb;
as, a vertical line.
(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.
(Bot.), such anthers as stand erect at the
top of the filaments.
(Astron.), an azimuth circle. See under
, an drill. See under Upright
(Mil.), the fire, as of mortars, at high
angles of elevation.
(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.
, a graduated arc attached to an instrument,
as a theodolite, for measuring vertical angles.
(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.
(a) (Conic Sections) A plane passing through the vertex of
a cone, and through its axis.
(b) (Projections) Any plane which passes through a
(c) (Persp.) The plane passing through the point of sight,
and perpendicular to the ground plane, and also to the
, 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.