Arcturus
noun
Arc·tu·rus
ärk-ˈtu̇r-əs 
-ˈtyu̇r-
: a giant fixed star of the first magnitude in Boötes
Examples of Arcturus in a Sentence
Recent Examples on the Web
The bright star Arcturus will be visible almost directly above the lunar disk at moonrise, while Vega shines in the east and the Big Dipper hovers near the zenith, pointing the way to Polaris.
—
Anthony Wood, Space.com, 13 May 2025
Coma Berenices is between there and Leo or, for something even easier this week, about a fifth of the distance between Arcturus and Mars.
—Jamie Carter, Forbes.com, 28 Apr. 2025
Companies like Arcturus are leveraging cutting-edge advancements to create hyperrealistic virtual replicas of live sporting events, allowing fans to experience games like never before.
—Kurt Knutsson, Cyberguy Report, FOXNews.com, 17 Apr. 2025
The two brightest nighttime stars available in the Minnesota and Wisconsin sky are Sirius and Arcturus.
—Mike Lynch, Twin Cities, 13 Apr. 2025
Once the explosion occurs, viewers can look for it between the bright stars of Vega and Arcturus.
—Julia Jacobo, ABC News, 28 Mar. 2025
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Anthony Wood, Space.com, 13 May 2025
Coma Berenices is between there and Leo or, for something even easier this week, about a fifth of the distance between Arcturus and Mars.
—Jamie Carter, Forbes.com, 28 Apr. 2025
Companies like Arcturus are leveraging cutting-edge advancements to create hyperrealistic virtual replicas of live sporting events, allowing fans to experience games like never before.
—Kurt Knutsson, Cyberguy Report, FOXNews.com, 17 Apr. 2025
The two brightest nighttime stars available in the Minnesota and Wisconsin sky are Sirius and Arcturus.
—Mike Lynch, Twin Cities, 13 Apr. 2025
Once the explosion occurs, viewers can look for it between the bright stars of Vega and Arcturus.
—Julia Jacobo, ABC News, 28 Mar. 2025
Cite this Entry
“Arcturus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Arcturus. Accessed 31 Oct. 2025.
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Arcturus
noun
Arc·tu·rus
ärk-ˈt(y)u̇r-əs
: a very large bright star in Boötes that does not appear to move
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