[ hawr-uh-zon-tl, hor- ]
/ ˌhɔr əˈzɒn tl, ˌhɒr- /



anything horizontal, as a plane, direction, or object.

Nearby words

  1. horites,
  2. horizon,
  3. horizon club,
  4. horizon distance,
  5. horizonless,
  6. horizontal bar,
  7. horizontal fissure of cerebellum,
  8. horizontal maxillary fracture,
  9. horizontal mobility,
  10. horizontal overlap

Origin of horizontal

1545–55; < Latin horizont- (stem of horizōn) horizon + -al1

Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for horizontal

British Dictionary definitions for horizontal


/ (ˌhɒrɪˈzɒntəl) /


parallel to the plane of the horizon; level; flatCompare vertical (def. 1)
of or relating to the horizon
measured or contained in a plane parallel to that of the horizon
applied uniformly or equally to all members of a group
economics relating to identical stages of commercial activityhorizontal integration


a horizontal plane, position, line, etc
Derived Formshorizontality or horizontalness, nounhorizontally, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for horizontal



1550s, "relating to or near the horizon," from French horizontal, from Latin horizontem (see horizon). Meaning "flat" (i.e., "parallel to the horizon") is from 1630s. Related: horizontally.

Online Etymology Dictionary, © 2010 Douglas Harper