horizontal

play
adjective hor·i·zon·tal \ ˌhȯr-ə-ˈzän-tᵊl , ˌhär- \

Definition of horizontal

1 a :of or relating to the apparent junction of earth and sky :situated near the horizon
b :parallel to, in the plane of, or operating in a plane parallel to the horizon or to a baseline :level
  • horizontal distance
  • a horizontal engine
2 :relating to, directed toward, or consisting of individuals or entities of similar status or on the same level
  • horizontal mergers
  • horizontal hostility

horizontal

noun

horizontality

play \ˌhȯr-ə-ˌzän-ˈta-lə-tē, ˌhär-\ noun

horizontally

play \ˌhȯr-ə-ˈzän-tᵊl-ē, ˌhär-\ adverb

Recent Examples of horizontal from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'horizontal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of horizontal


HORIZONTAL Defined for English Language Learners

horizontal

play
adjective

Definition of horizontal for English Language Learners

  • : positioned from side to side rather than up and down : parallel to the ground


HORIZONTAL Defined for Kids

1

horizontal

play
adjective hor·i·zon·tal \ ˌhȯr-ə-ˈzän-tᵊl \

Definition of horizontal for Students

:lying flat or level :parallel to the horizon

horizontally

adverb

2

horizontal

noun

Definition of horizontal for Students

:something (as a line or plane) that is parallel to the horizon

Medical Dictionary

horizontal

play
adjective hor·i·zon·tal \ ˌhȯr-ə-ˈzänt-ᵊl, ˌhär- \

medical Definition of horizontal

1 :relating to or being a transverse plane or section of the body
2 a :relating to or being transmission (as of a disease) by physical contact or proximity in contrast with inheritance — compare vertical
b :of or relating to horizontal gene transfer

horizontally

play \-ᵊl-ē\ adverb

Law Dictionary

horizontal

play
adjective hor·i·zon·tal \ ˌhȯr-ə-ˈzän-təl, ˌhär- \

legal Definition of horizontal

:relating to, directed toward, or consisting of individuals or entities of similar status or on the same level

horizontally

adverb


Seen and Heard

What made you want to look up horizontal? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a strongly worded attack

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!