Definition of horizontal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

The meaning of HORIZONTAL is of or relating to the apparent junction of earth and sky : situated near the horizon. How to use horizontal in a sentence.

Something that is horizontal is flat and level with the ground, rather than at an angle to it. The board consists of vertical and horizontal lines. Swing the club back until it is horizontal.

Define horizontal. horizontal synonyms, horizontal pronunciation, horizontal translation, English dictionary definition of horizontal. adj. 1. Of, relating to, or near the horizon.

Horizontal definition: Of, relating to, or near the horizon.

Jan 20, 2026 · Adjective horizontal (comparative more horizontal, superlative most horizontal) Perpendicular to the vertical; parallel to the plane of the horizon; level, flat. horizontal lines

of or pertaining to a position or individual of similar status: He received a horizontal promotion to a different department, retaining his old salary and title.

Horizontal generally refers to a direction or orientation that is parallel to the ground or a flat surface. It can also refer to something that is at the same level or on the same plane as a specific reference …

HORIZONTAL definition: at right angles to the vertical; parallel to level ground. See examples of horizontal used in a sentence.

(Definition of horizontal from the Cambridge Learner's Dictionary © Cambridge University Press)