su·​per·​heat | \ ˌsü-pər-ˈhēt How to pronounce superheat (audio) \
superheated; superheating; superheats

Definition of superheat

 (Entry 1 of 2)

transitive verb

1 : to heat (a vapor not in contact with its own liquid) so as to cause to remain free from suspended liquid droplets superheated steam
2 : to heat (a liquid) above the boiling point without converting into vapor


su·​per·​heat | \ ˈsü-pər-ˌhēt How to pronounce superheat (audio) , ˌsü-pər-ˈhēt\

Definition of superheat (Entry 2 of 2)

: the extra heat imparted to a vapor in superheating it from a dry and saturated condition also : the corresponding rise of temperature

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Other Words from superheat


superheater noun

Examples of superheat in a Sentence

Recent Examples on the Web: Verb

When superheated cast iron meets shreds of potato skin embedded in the dough, the slight charring ignites one final flourish of barbecue brisket essence. Ali Bouzari, San Francisco Chronicle, "Housemade: The silent science behind three signature dishes at Duna," 12 Apr. 2018 Make sure to put a chopstick or toothpick inside the bowl—if not, the water can superheat and make the bowl explode! Alyse Whitney, Bon Appetit, "18 Places You Should Be Cleaning with Vinegar in Your Kitchen," 18 Jan. 2018 Dolsot bibimbap takes the classic Korean all-in-one rice dish and superheats it in a stone bowl. Mike Sutter, San Antonio Express-News, "Review: Korean cafe serving up real Seoul food at Seoul Asian Market & Cafe," 14 Dec. 2017 Start now, so there is still enough sun and heat to superheat the soil to kill plants, weeds and seeds in the upper layer. Nan Sterman,, "September in the garden," 31 Aug. 2017 The good news for Democrats is that state Senate candidate Manka Dhingra was running first in the Eastside’s superheated 45th District campaign. Danny Westneat, The Seattle Times, "Hoping for a liberal revolution in Tuesday’s vote? Not so fast," 1 Aug. 2017 Big guns like the Hubble Space Telescope could be enlisted to investigate further if astronomers find a dark stain left behind on Jupiter’s cloud tops—a sign of soot produced as the atmosphere superheated during the explosion. Andrew Fazekas, National Geographic, "See Jupiter Take One for the Solar System," 30 Mar. 2016

Recent Examples on the Web: Noun

Turn the water off, then wait six to eight weeks as the soil superheats to kill the grass and weeds. Nan Sterman,, "Garden chores for August," 3 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'superheat.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of superheat


1849, in the meaning defined at sense 1


1852, in the meaning defined above

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The first known use of superheat was in 1849

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