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

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

With Arcturus at the center, use its surrounding stars to shape a cocktail glass. —Jamie Carter, Forbes.com, 14 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

That’s Arcturus, the fourth-brightest star in the night sky and the brightest star in the constellation Bootes the Herdsman. —Mike Lynch, Twin Cities, 30 Mar. 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

Trace a line from Arcturus down to a bright star, Vega, close to the northeastern horizon. —Jamie Carter, Forbes.com, 27 Mar. 2025

Now look for bright star Vega rising in the east, lower in the sky than Arcturus. —Jamie Carter, Forbes, 21 Mar. 2025

Word History

Etymology

Latin, from Greek Arktouros, literally, bear watcher

First Known Use

14th century, in the meaning defined above

Rhymes for Arcturus

• asuras
• mercurous
• duras

Kids Definition

Arcturus

noun

Arc·​tu·​rus ärk-ˈt(y)u̇r-əs 

: a very large bright star in Boötes that does not appear to move