horizontally Definition

horizontal
adj

1. At right angles to vertical.
2. Relating to or parallel to the horizon; level or flat.

Thesaurus: level, even, flush, aligned, flat, parallel, plane; prostrate, recumbent.
3. Measured in the plane of the horizon.
4. Applying equally to all members of a group or aspects of a situation.

noun

1. A horizontal line, position or object.

Derivative: horizontally
adverb

Etymology: 16c: French.