zenith

noun

ze·​nith ˈzē-nəth How to pronounce zenith (audio)
 Canadian also and British usually  ˈze-nəth,
-nith
1
: the point of the celestial sphere that is directly opposite the nadir and vertically above the observer see azimuth illustration
2
: the highest point reached in the heavens by a celestial body
3
: culminating point : acme
at the zenith of his powersJohn Buchan

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Reaching the Zenith

When you reach the zenith, you're at the top, the pinnacle, the summit, the peak. Zenith developed from an Arabic phrase meaning "the way over one's head," and then traveled through Old Spanish, Medieval Latin, and Middle French before arriving in English. As long ago as the 1300s, English speakers used zenith to name the highest point in the celestial heavens, directly overhead. By the 1600s, zenith was being used for other high points as well. The celestial term is often contrasted with nadir, which refers to the point that is vertically downward from the observer (imagine a line going through the Earth from the observer's feet and out the other side into the sky). Figuratively, nadir simply means "the lowest point."

Examples of zenith in a Sentence

at the zenith of her career as a dancer
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.
Kitamura’s actor, too, has achieved a kind of creative and professional zenith only after renouncing the prospect of such a home, and Xavier’s claim suddenly confronts her with the alternative reality of being a very different kind of character: a mother. Jordan Kisner, The Atlantic, 4 Apr. 2025 Simon Fisher-Becker, who reached a career zenith in the original Harry Potter film and Doctor Who on television, died on Sunday, March 9. Marc Berman, Forbes, 10 Mar. 2025 Having pitched their idea to Marvel and DC — then the zenith of all things comics — Eastman and Laird were left disillusioned by the business of mainstream publishing. Christopher Cruz, Rolling Stone, 31 Dec. 2024 As the solar cycle reaches its zenith, solar flares, solar system's largest explosive events, increase, causing phenomenon such as May's solar storm, the largest observed by NASA in decades. Max Hauptman, USA TODAY, 17 Oct. 2024 See All Example Sentences for zenith

Word History

Etymology

Middle English cenyth, senyth, from Middle French cenit, from Medieval Latin, from Old Spanish zenit, modification of Arabic samt (al-ra's) way (over one's head)

First Known Use

14th century, in the meaning defined at sense 1

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

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Cite this Entry

“Zenith.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/zenith. Accessed 18 Apr. 2025.

Kids Definition

zenith

noun
ze·​nith ˈzē-nəth How to pronounce zenith (audio)
1
: the point in the heavens directly overhead
2
: the highest point

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