ho·​ri·​zon | \ hə-ˈrī-zᵊn \

Definition of horizon

1a : the line where the earth seems to meet the sky : the apparent junction of earth and sky sailing toward the horizon
b : the great circle on the celestial sphere formed by the intersection of the celestial sphere with a plane tangent to the earth's surface at an observer's position — see azimuth illustration
c : range of perception or experience broaden your horizons
d : something that might be attained opening up new horizons in the field of cancer research
2a geology : a natural soil layer deposited at a particular time usually identified by distinctive fossils
b geology : any of the reasonably distinct layers of soil or its underlying material in a vertical section of land
c anthropology : a cultural area or level of development indicated by separated groups of artifacts

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Other Words from horizon

horizonal \ hə-​ˈrī-​zᵊn-​əl \ adjective

Examples of horizon in a Sentence

We sailed toward the horizon. The sun rose slowly over the eastern horizon. These discoveries have opened up new horizons in the field of cancer research.
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Recent Examples on the Web

For Meghan Markle and Prince Harry, serene days are on the horizon. Elise Taylor, Vogue, "Prince Harry and Meghan Markle Are Almost Ready to Move Into Frogmore Cottage," 1 Feb. 2019 Sky News also noted that Williams has a lot of exciting projects on the horizon once Game of Thrones is over. Amy Mackelden, Harper's BAZAAR, "Maisie Williams Teases the Game of Thrones Finale & Thinks Fans Will Be Disappointed," 26 Jan. 2019 Luckily for us fans who grew up on the two movies (and the books by Meg Cabot), there may be some good news on the horizon. Katherine J. Igoe, Marie Claire, "Anne Hathaway Just Dropped a Major Hint About 'The Princess Diaries 3'," 25 Jan. 2019 With no sense of resolution on the horizon, which is related to President Trump's demand for a wall along the southern border, the WMM will remain uncorrected for the immediate future. David Grossman, Popular Mechanics, "The Government Shutdown Is Messing with North," 15 Jan. 2019 Multiple market measures indicate an economic slowdown could be on the horizon, and many market experts and observers are starting to sound the alarm. Emily Stewart, Vox, "What’s wrong with the stock market right now, explained," 18 Dec. 2018 If a more pronounced downturn is indeed on the horizon, the ECB’s late exit could complicate its response. Brian Blackstone, WSJ, "ECB Stimulus’s Mixed Legacy: Economic Success, Political Fiasco," 12 Dec. 2018 With only three or four people visible on the horizon, no signs of animals, and barely any detectable breeze in the air or movement in the water, the Dead Sea is creepy—in a good way. Jenna Rosenstein, Harper's BAZAAR, "Why the Dead Sea Should Be at the Top of Every Beauty Junkie's Travel List," 5 Sep. 2018 Welp, Meghan's pregnancy announcement may be on the horizon, folks, as the latest hint that the royal couple are preparing for children has surfaced. Ruby Buddemeyer, Marie Claire, "Here's Why People Think Prince Harry and Meghan Markle Will Have Kids Soon," 2 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'horizon.' 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 horizon

14th century, in the meaning defined at sense 1a

History and Etymology for horizon

Middle English orizon, from Late Latin horizont-, horizon, from Greek horizont-, horizōn, from present participle of horizein to bound, define, from horos boundary; perhaps akin to Latin urvum curved part of a plow

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Statistics for horizon

Last Updated

10 Feb 2019

Look-up Popularity

Time Traveler for horizon

The first known use of horizon was in the 14th century

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More Definitions for horizon



English Language Learners Definition of horizon

: the line where the earth or sea seems to meet the sky
: the limit or range of a person's knowledge, understanding, or experience
: the limit of what is possible in a particular field or activity


ho·​ri·​zon | \ hə-ˈrī-zᵊn \

Kids Definition of horizon

1 : the line where the earth or sea seems to meet the sky
2 : the limit of a person's outlook or experience Reading broadens our horizons.

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More from Merriam-Webster on horizon

Rhyming Dictionary: Words that rhyme with horizon

Spanish Central: Translation of horizon

Nglish: Translation of horizon for Spanish Speakers

Britannica English: Translation of horizon for Arabic Speakers

Britannica.com: Encyclopedia article about horizon

Comments on horizon

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


to deny responsibility for

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