horizon
noun
ho·ri·zon hə-ˈrī-zᵊn 
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
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
The meteor can be seen to the left of the image just below the curve of Earth's horizon. —
Anthony Wood, Space.com, 22 Apr. 2026 In the 13-part series, David Attenborough took his audience to more than 100 locations around the world, introducing the world to new species, concepts, and horizons. —Olivia Morelli, Condé Nast Traveler, 20 Apr. 2026 The rest of the stars, farther away in the sky from Polaris also circle the North Star once every twenty four hours, but the northern portion of their circles lie below the northern horizon. —Mike Lynch, Twin Cities, 19 Apr. 2026 Sarah Meyssonnier | Reuters Conflict in the Middle East has sent the market on a wild ride, but investors with a long-term horizon ought to look past short-term disruptions to find compelling stocks. —Tipranks.com Staff, CNBC, 19 Apr. 2026 See All Example Sentences for horizon
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.
Anthony Wood, Space.com, 22 Apr. 2026 In the 13-part series, David Attenborough took his audience to more than 100 locations around the world, introducing the world to new species, concepts, and horizons. —Olivia Morelli, Condé Nast Traveler, 20 Apr. 2026 The rest of the stars, farther away in the sky from Polaris also circle the North Star once every twenty four hours, but the northern portion of their circles lie below the northern horizon. —Mike Lynch, Twin Cities, 19 Apr. 2026 Sarah Meyssonnier | Reuters Conflict in the Middle East has sent the market on a wild ride, but investors with a long-term horizon ought to look past short-term disruptions to find compelling stocks. —Tipranks.com Staff, CNBC, 19 Apr. 2026 See All Example Sentences for horizon
Cite this Entry
“Horizon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.grautoblog.com/dictionary/horizon. Accessed 25 Apr. 2026.
Copy CitationKids Definition
horizon
noun
ho·ri·zon ˈhə-ˈrīz-ᵊn
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
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