horizon

noun

ho·​ri·​zon hə-ˈrī-zᵊn How to pronounce horizon (audio)
1
a
: 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
2
a
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
horizonal 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.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Regardless, Jiang hopes that China’s new filmmakers will continue expanding their horizons. Mathew Scott, The Hollywood Reporter, 5 Nov. 2024 Younger investors with a longer time horizon may be able to take on more risk by investing in higher-growth assets like stocks, while those nearing retirement might prefer more stable investments like bonds. True Tamplin, Forbes, 4 Nov. 2024 If the point of travel is to expand your horizons, there are worse places to wind up than the Okanagan Valley in British Columbia, Canada. Zach Wichter, USA TODAY, 3 Nov. 2024 Reeves also said the debt rule would be met on a three-year rolling basis, rather than the previous five-year rolling horizon. Sasha Rogelberg, Fortune Europe, 30 Oct. 2024 See all Example Sentences for horizon 

Word History

Etymology

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

First Known Use

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

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

Dictionary Entries Near horizon

Cite this Entry

“Horizon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/horizon. Accessed 23 Nov. 2024.

Kids Definition

horizon

noun
ho·​ri·​zon ˈhə-ˈrīz-ᵊn How to pronounce horizon (audio)
1
: the line where the earth or sea seems to meet the sky
2
: the limit or range of a person's outlook or experience
reading broadens our horizons
3
: a distinct layer of soil or its underlying material in a vertical section of land
horizonal
-ˈrīz-nəl How to pronounce horizon (audio)
-ᵊn-əl
adjective
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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