on heat

phrase

British
—used to describe a female animal that is ready to have sex and is able to become pregnant
The cat is on heat.
like a dog on heat

Examples of on heat in a Sentence

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.
At Northwestern, Liu is focused on an electrochemical route, which unlike other options, doesn’t rely on heat. — Emily Waltz, IEEE Spectrum, 19 Aug. 2026 Generally, studies on heat extremes work with some combination of daily minimum, maximum, and mean temperatures. — Scott K. Johnson, ArsTechnica, 11 Aug. 2026 On July 27, the union filed a complaint with Maryland Occupational Safety and Health, claiming MPS also failed to properly train employees on heat exposure and communicate with them when the heat index rose above 90 degrees. — Renee Anderson, CBS News, 6 Aug. 2026 Doug Casa, the institute’s chief executive and a professor of kinesiology, said the not-for-profit has worked with large employers such as UPS and Delta Airlines and many others on heat-safety strategies. — Kenneth R. Gosselin, Hartford Courant, 14 Apr. 2026 See All Example Sentences for on heat

Browse Nearby Words

Cite this Entry

“On heat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/on%20heat. Accessed 3 Oct. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster