Definify.com
Webster 1913 Edition
Vertical
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
lineVertical 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 upright 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.
Ver′ti-cal
,Noun.
1.
Vertical position; zenith.
[R.]
2.
(Math.)
A vertical line, plane, or circle.
Prime vertical
, Prime vertical dial
See under
Prime
, Adj.
Webster 1828 Edition
Vertical
VERT'ICAL
,Adj.
1.
Placed or being in the zenith, or perpendicularly over the head. The sun is vertical to the inhabitants within the tropics at certain times every year.2.
Being in a position perpendicular to the plane of the horizon.Vertical leaves, in botany, are such as stand so erect, that neither of the surfaces can be called the upper or under.
Vertical anthers, are such as terminate the filaments, and being inserted by their base, stand no less upright than the filaments themselves.
Vertical circle, in astronomy, a great circle passing through the zenith and the nadir. The meridian of any place is a vertical circle. The vertical circles are called azimuths.
Vertical line, in conics, is a right line drawn on the vertical plane, and passing through the vertex of the cone.
Vertical plane, in conics, is a plane passing through the vertex of a cone, and through its axis.
Prime vertical, a great circle of the sphere, perpendicular to the horizon, and passing through the zenith and the east and west points.