heat up
verb
heated up; heating up; heats up
1
: to become warm or hot
The morning started out cold but it heated up quickly.
2
: to become more active, intense, or angry
Their conversation started to heat up.
Competition between the two companies is heating up.
3
heat (something) up
or heat up (something)
: to cause (something) to become warm or hot
Could you heat up the vegetables, please?
Examples of heat up in a Sentence
Recent Examples on the Web
Lei Ying Lee, Xia Brookside rivalry heats up Lei Ying Lee brought the TNA Knockouts Championship back home last week with a win over Arianna Grace.
—
Ryan Gaydos, FOXNews.com, 15 May 2026
The pocket camera battle is heating up, as DJI’s rival Insta360 is also set to introduce a similar camera.
—Ben Sin, Forbes.com, 15 May 2026
Rather than burn tobacco, e-cigarettes heat up a liquid consisting of nicotine, flavorings and additives that are inhaled as vapor.
—Aria Bendix, NBC news, 15 May 2026
The Canadiens’ top line finally appears to be heating up.
—Arpon Basu, New York Times, 15 May 2026
See All Example Sentences for heat up
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Ryan Gaydos, FOXNews.com, 15 May 2026
The pocket camera battle is heating up, as DJI’s rival Insta360 is also set to introduce a similar camera.
—Ben Sin, Forbes.com, 15 May 2026
Rather than burn tobacco, e-cigarettes heat up a liquid consisting of nicotine, flavorings and additives that are inhaled as vapor.
—Aria Bendix, NBC news, 15 May 2026
The Canadiens’ top line finally appears to be heating up.
—Arpon Basu, New York Times, 15 May 2026
See All Example Sentences for heat up
Cite this Entry
“Heat up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20up. Accessed 16 May. 2026.
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