horizontal

adjective
hor·​i·​zon·​tal | \ ˌhȯr-ə-ˈzän-tᵊl How to pronounce horizontal (audio) , ˌhär-\

Definition of horizontal

1a : 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
3 medical : relating to or being transmission (as of a disease) by physical contact or proximity in contrast with inheritance Genes are normally inherited from parents, but they can also be inserted into a genome by viruses, plasmids, and other foreign agents—a phenomenon called horizontal transfer.— Stephan Reebs — compare vertical sense 4

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Other Words from horizontal

horizontal noun
horizontality \ ˌhȯr-​ə-​ˌzän-​ˈta-​lə-​tē How to pronounce horizontality (audio) , ˌhär-​ \ noun
horizontally \ ˌhȯr-​ə-​ˈzän-​tᵊl-​ē How to pronounce horizontally (audio) , ˌhär-​ \ adverb

Examples of horizontal in a Sentence

Recent Examples on the Web

The combination of horizontal and vertical movement on the two-seamer, meanwhile, explains why hitters have rolled over it nearly 70% of the time this season. Michael Beller, SI.com, "How the Pirates' Jameson Taillon Reached His Ace Potential Without Changing a Thing," 25 Apr. 2018 Additional features include wireless connectivity, and flexible positioning with automatic horizontal and vertical keystone correction for proportional, high-quality image display from multiple angles. Debbie Carlson, chicagotribune.com, "Tools to make traveling for work simpler," 12 Apr. 2018 Choose your weekly layout (vertical, horizontal, or hourly), coil color, color scheme, and more. The Good Housekeeping Institute, Good Housekeeping, "GH Seal Spotlight: Erin Condren Coiled LifePlanner," 5 Apr. 2019 By contrast, T-Mobile/Sprint is a horizontal merger between competitors selling similar products. Greg Ip, WSJ, "T-Mobile Sprint Merger Is a Test of Trump’s Antitrust Mettle," 5 Sep. 2018 The room-less elevator consumes less vertical and horizontal space; without a machine room, a building’s flat roof can more easily accommodate expansive green areas with plantings and solar panels. Adrienne Bernhard, Smithsonian, "Elevators Are Going Green," 27 Apr. 2018 Then there’s the actual physics of being horizontal. Carolyn L. Todd, SELF, "Does Lying Down After Eating Really Cause Gas?," 28 Mar. 2019 The decision to drill some of the longest horizontal wells ever in shale rocks turned into a costly misstep costing hundreds of millions of dollars, the people said. Christopher M. Matthews, WSJ, "The Merger That Made a U.S. Gas Giant Is Failing," 13 Jan. 2019 There are detectors that look for horizontal or vertical lines, gradients from light to dark, checkerboard patterns, and many other shapes. Timothy B. Lee, Ars Technica, "How computers got shockingly good at recognizing images," 18 Dec. 2018

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.

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First Known Use of horizontal

1555, in the meaning defined at sense 1a

History and Etymology for horizontal

see horizon

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Statistics for horizontal

Last Updated

7 May 2019

Look-up Popularity

Time Traveler for horizontal

The first known use of horizontal was in 1555

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More Definitions for horizontal

horizontal

adjective

English Language Learners Definition of horizontal

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

horizontal

adjective
hor·​i·​zon·​tal | \ ˌhȯr-ə-ˈzän-tᵊl How to pronounce horizontal (audio) \

Kids Definition of horizontal

 (Entry 1 of 2)

: lying flat or level : parallel to the horizon

Other Words from horizontal

horizontally adverb

horizontal

noun

Kids Definition of horizontal (Entry 2 of 2)

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

horizontal

adjective
hor·​i·​zon·​tal | \ ˌhȯr-ə-ˈzänt-ᵊl, ˌhär- How to pronounce horizontal (audio) \

Medical Definition of horizontal

1 : relating to or being a transverse plane or section of the body
2a : 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

Other Words from horizontal

horizontally \ -​ᵊl-​ē How to pronounce horizontally (audio) \ adverb

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horizontal

adjective
hor·​i·​zon·​tal | \ ˌhȯr-ə-ˈzän-təl, ˌhär- How to pronounce horizontal (audio) \

Legal Definition of horizontal

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

Other Words from horizontal

horizontally adverb

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More from Merriam-Webster on horizontal

Spanish Central: Translation of horizontal

Nglish: Translation of horizontal for Spanish Speakers

Britannica English: Translation of horizontal for Arabic Speakers

Britannica.com: Encyclopedia article about horizontal

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