HORIZONTALLY
horizontally
(adverb) in a horizontal direction; “a gallery quite often is added to make use of space vertically as well as horizontally”
Source: WordNet® 3.1
Etymology
Adverb
horizontally (comparative more horizontally, superlative most horizontally)
In a horizontal direction or position.
Antonyms
• vertically
Source: Wiktionary
Hor`i*zon"tal*ly, adv.
Definition: In a horizontal direction or position; on a level; as, moving
horizontally.
HORIZONTAL
Hor`i*zon"tal, a. Etym: [Cf. F. horizontal.]
1. Pertaining to, or near, the horizon. "Horizontal misty air."
Milton.
2. Parallel to the horizon; on a level; as, a horizontalline or
surface.
3. Measured or contained in a plane of the horizon; as, horizontal
distance. Horizontal drill, a drilling machine having a horizontal
drill spindle.
– Horizontal engine, one the piston of which works horizontally.
– Horizontal fire (Mil.), the fire of ordnance and small arms at
point-blank range or at low angles of elevation.
– Horizontal force (Physics), the horizontal component of the
earth's magnetic force.
– Horizontal line (Descriptive Geometry & Drawing), a constructive
line, either drawn or imagined, which passes through the point of
sight, and is the chief line in the projection upon which all
verticals are fixed, and upon which all vanishing points are found.
– Horizontal parallax. See under Parallax.
– Horizontal plane (Descriptive Geometry), a plane parallel to the
horizon, upon which it is assumed that objects are projected. See
Projection. It is upon the horizontal plane that the ground plan of
the buildings is supposed to be drawn.
– Horizontal projection, a projection made on a plane parallel to
the horizon.
– Horizontal range (Gunnery), the distance in a horizontal plane to
which a gun will throw a projectile.
– Horizontal water wheel, a water wheel in which the axis is
vertical, the buckets or floats revolving in a horizontal plane, as
in most turbines.
Source: Webster’s Unabridged Dictionary 1913 Edition