Dictionary.com
Thesaurus.com

half-circle

British  

noun

    1. one half of a circle

    2. half the circumference of a circle

  1. anything having the shape or form of half a circle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

To the south, across the Mexican border, loomed another luminous half-circle from the lights of Nogales.

From Scientific American • Oct. 1, 2022

Last week, from across a half-circle booth, Krumrie extended those same hands.

From New York Times • Feb. 8, 2022

Capcom, which brings on another drag fighter, and no quarter or half-circle directional inputs.

From The Verge • Feb. 1, 2022

The red curtains opened to him in a white robe with his back to the audience — he was preaching to a group sitting in a half-circle onstage.

From Washington Post • Dec. 8, 2021

But at the beginning of October it became apparent that Venus was changing shape: slowly, it was moving towards being a half-circle.

From "The Invention of Science" by David Wootton