horizontal

Horizontal describes something that is parallel to the horizon (the area where the sky seems to meet the earth). (adjective)

An example of a horizontal line is one that goes across the paper.

See horizontal in Webster's New World College Dictionary

adjective

of or near the horizon
1. parallel to the plane of the horizon; not vertical
2. placed, operating, or acting chiefly in a horizontal direction
flat and even; level
at, or made up of elements at, the same levels of industrial production and distribution, or of status

noun

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See horizontal in American Heritage Dictionary 4

(hôrˌĭ-zŏnˈtl, hŏrˌ-)

adjective

Of, relating to, or near the horizon.
a. Parallel to or in the plane of the horizon.
b. At right angles to a vertical line.
Occupying or restricted to the same level in a hierarchy: a horizontal study of verbal ability; a horizontal transfer by an employee.

noun

Something, such as a line, plane, or object, that is horizontal.

Related Forms: