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Arcturus
[ ahrk-toor-uhs, -tyoor- ]
noun
Astronomy.
- a first-magnitude star in the constellation Boötes.
Arcturus
/ ɑːˈʊəə /
noun
- the brightest star in the constellation Boötes: a red giant. Visual magnitude: –0.4; spectral type: K2III; distance: 37 light years
Arcturus
- A giant star in the constellation Boötes. It is the brightest star in the Northern Hemisphere and the fourth brightest star in the sky, with an apparent magnitude of 0.00. Scientific name: Alpha Boötes.
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Derived Forms
- ˈٳܰ, adjective
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Other Word Forms
- ·ٳ۾· adjective
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Word History and Origins
Origin of Arcturus1
1352–75; < Latin < Greek ٴûDz, equivalent to á ( os ) bear + -ûDz keeper; replacing Middle English arture < Middle French
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Word History and Origins
Origin of Arcturus1
C14: from Latin, from Greek Arktouros, from arktos bear + ouros guard, keeper
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Example Sentences
Examples have not been reviewed.
To find the area of sky where it should appear, she advises to first locate the plough and follow its handle to Arcturus.
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Let’s get back to my summertime favorites of Vega, Arcturus and Antares.
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Meanwhile, Arcturus has jumped to around 12.5 percent of cases, a rise from just 1 percent at the end of March.
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Everywhere it goes, Arcturus has generated reports of red, irritated eyes, especially in children.
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The California Department of Public Health estimates Arcturus comprises about 7% of coronavirus cases for the same week.
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