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

Keep scrolling for more

Other Words from superheat


superheater noun

Examples of superheat in a Sentence

Recent Examples on the Web: Verb Its magma reservoirs sit very close to the surface, feeding heat and gas into a shallow aquifer above it, superheating any water trapped in the rock, and pressurizing the surrounding sediment. Megan Molteni, Wired, "Why Volcanologists Didn't Predict New Zealand's Deadly Eruption," 10 Dec. 2019 Normally, that boundary huddles too close to the star for astronomers to see it, but this particular star had a sudden burst of brightness that superheated its disk, obliterating ice further out than usual. Sarah Lewin Frasier, Scientific American, "Astronomers Spot First-Ever “Snow Line” around Newborn Star," 13 July 2016 Solar panels generate electrical power, which the vehicle then uses to generate microwaves, which superheat the water up to Sun-surface temperatures. Sarah Scoles, WIRED, "Here Come the Space Tugs, Ready to Tidy Up Earth's Orbits," 22 Aug. 2019 Ben Platt didn’t stumble tenderfooted into the title character of Dear Evan Hansen, the musical in which his superheated, sung-through-sobs performance earned him a Tony, an Emmy, and a Grammy before his 25th birthday. Vogue, "Ben Platt on His Next Act: A Star Turn in Ryan Murphy's The Politician," 20 Aug. 2019 The plastic will trap the sun’s rays to superheat the soil, killing grass, weeds, weed seeds, etc. Nan Sterman, San Diego Union-Tribune, "34 things to do in the garden in July," 3 July 2019 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 Recent Examples on the Web: Noun Maars appear when magma mixes explosively with groundwater, triggering eruptions of fresh volcanic material, or when hot rock superheats this water, creating bursts of steam that fling rock into the sky. Robin George Andrews, National Geographic, "Explosions may have created weird lakes on Saturn's largest moon," 12 Sep. 2019 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.

See More

First Known Use of superheat


1849, in the meaning defined at sense 1


1852, in the meaning defined above

Keep scrolling for more

Learn More about superheat

Time Traveler for superheat

Time Traveler

The first known use of superheat was in 1849

See more words from the same year

Statistics for superheat

Cite this Entry

“Superheat.” Dictionary, Merriam-Webster, Accessed 26 Jan. 2021.

More from Merriam-Webster on superheat

Thesaurus: All synonyms and antonyms for superheat

Comments on superheat

What made you want to look up superheat? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Slippery Words Quiz—Changing with the Times

  • ducreux self portrait yawning
  • What is an earlier meaning of nice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

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