Horizontal Definition
 hôrĭ-zŏntl, hŏr- 
  horizontals
  
    adjective
  
 Of or near the horizon.
 Horizontal parallax.
 Webster's New World 
Parallel to the plane of the horizon; not vertical.
 Webster's New World 
At right angles to a vertical line.
 American Heritage Medicine 
Placed, operating, or acting chiefly in a direction parallel to the horizon.
 Webster's New World 
Flat and even; level.
 Webster's New World 
    noun
  
 
    horizontals
  
A horizontal line, plane, etc.
 Webster's New World 
Position parallel to the horizon.
 Webster's New World 
Other Word Forms of Horizontal
Noun
Singular:
 horizontalPlural:
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