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Definition of Horizontal
1. Noun. Something that is oriented horizontally.
2. Adjective. Parallel to or in the plane of the horizon or a base line. "A horizontal surface"
Similar to: Crosswise, Flat, Level, Naiant, Swimming
Derivative terms: Horizontality
Antonyms: Inclined, Vertical
Definition of Horizontal
1. a. Pertaining to, or near, the horizon.
Definition of Horizontal
1. [n -S]
Medical Definition of Horizontal
1.
1. Pertaining to, or near, the horizon. "Horizontal misty air."
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, the fire of ordnance and small arms at point-blank range or at low angles of elevation.