heat

verb
\ˈhēt \
heated; heating; heats

Definition of heat 

(Entry 1 of 2)

intransitive verb

1 : to become warm or hot water heating in a kettle

2 : to start to spoil from heat

transitive verb

1 : to make warm or hot heat a can of soup heat the oven to 350 degrees

2 : excite were heated by his stirring words

heat

noun

Definition of heat (Entry 2 of 2)

1a(1) : a condition of being hot : warmth snow melting in the heat of the sun

(2) : a marked or notable degree of hotness The heat was intense.

b : pathological excessive bodily temperature the heat of the fever

c : a hot place or situation get out of the heat

d(1) : a period of heat an unbroken heat

(2) : a single complete operation of making something warm or hot also : the quantity of material so heated

e(1) physics : added energy that causes substances to rise in temperature, fuse, evaporate, expand, or undergo any of various other related changes, that flows to a body by contact with or radiation from bodies at higher temperatures, and that can be produced in a body (as by compression)

(2) physics : the energy associated with the random motions of the molecules, atoms, or smaller structural units of which matter is composed

f : appearance, condition, or color of something as indicating its temperature when the rod is at the proper welding heat

2a : intensity of feeling or reaction : passion answered with considerable heat

b : the height or stress of an action or condition in the heat of battle

c : sexual excitement especially in a female mammal like an animal in heat specifically : estrus

3 : a single continuous effort: such as

a : a single round of a contest (such as a race) having two or more rounds for each contestant won two heats out of three

b : one of several preliminary contests held to eliminate less competent contenders won the second heat but finished third in the final race

4 : pungency of flavor Add some cayenne pepper for extra heat.

5a slang

(1) : the intensification of law-enforcement activity or investigation waited until the heat was off

(2) : police

b : pressure, coercion turn up the heat on your congressperson

c : abuse, criticism took heat for her mistakes

6 baseball : smoke sense 8 throwing some heat

7 slang : gun sense 1b was packing heat

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Other Words from heat

Verb

heatable \ˈhē-​tə-​bəl \ adjective

Noun

heatless \ˈhēt-​ləs \ adjective
heatproof \ˈhēt-​ˌprüf \ adjective

Synonyms & Antonyms for heat

Synonyms: Verb

hot (up) [chiefly Southern, southern Midland, & British], toast, warm

Synonyms: Noun

ardency, ardor, emotion, enthusiasm, fervency, fervidness, fervor, fire, intenseness, intensity, passion, passionateness, vehemence, violence, warmth, white heat

Antonyms: Verb

chill, cool, refrigerate

Antonyms: Noun

impassiveness, impassivity, insensibility, insensibleness, insensitiveness, insensitivity

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Examples of heat in a Sentence

Verb

I heated the vegetables in the microwave. They heat their house with a wood stove.

Noun

The sun's heat melted the snow. the intense heat of a fire She applied heat to the sore muscles in her leg. a period of high heat and humidity The crops were damaged by drought and extreme heat. Cook the milk over low heat. Remove the pan from the heat.
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Recent Examples on the Web: Verb

The interior has a non-stick coating and looks a little more high-tech on the outside, with LED controls that heat up to between 100°F and 390°F. Betty Gold, Good Housekeeping, "The 5 Best Air Fryers for Making Crispy Comfort Foods So Much Healthier," 20 Nov. 2018 Sit tight as the runway heats up and then...enjoy the show! Marina Liao, Marie Claire, "Watch the Tory Burch Spring 2019 Runway Show Live," 7 Sep. 2018 A decade ago, Education Management was a fast-growing company in a for-profit sector that heated up when federal regulators eased the rules on aid for online education. Peg Brickley, WSJ, "End of the Line for For-Profit School Operator Education Management," 2 July 2018 Accessible Cook Inlet natural gas reserves that heat and power much of Southcentral Alaska were dwindling in 2009 when the Legislature formed AGDC as a wing of the Alaska Housing Finance Corp. Author: Elwood Brehmer, Anchorage Daily News, "Army Corps releases final EIS for in-state Alaska gasline," 24 June 2018 And much is lost through the use of inefficient devices, like incandescent light bulbs that heat up a filament to produce light. David Roberts, Vox, "This technology could fundamentally change our relationship to electricity," 5 June 2018 Mayor de Blasio then committed $82 million to replace 39 boilers that heat 104 buildings with the worst heating problems. New York Times, "New York Public Housing Set to Get Federal Monitor and $1 Billion in Repairs," 31 May 2018 When Vivian introduces her wine-guzzling book club friends to the erotic words of E.L. James, things heat up on and off the page. Erin Jensen, USA TODAY, "9 movies romance junkies need to see this year," 4 May 2018 Under the building are 63 350-foot deep thermal wells that heat and cool the building using the earth's temperature. achieving LEED Silver certification for the entire campus by building Grizzly Ridge. Jennifer Conn, Akron Reporter, cleveland.com, "Akron Zoo sets global sustainability standard for zoos with 'Big Hanna' compost system (photos)," 24 Apr. 2018

Recent Examples on the Web: Noun

Now zip ahead to November: Jonas and Chopra are very much engaged, and the heat is still just as intense. Christopher Rosa, Glamour, "Priyanka Chopra and Nick Jonas' Flirty Instagram Activity: A Complete History," 13 Nov. 2018 In a recent test, both modes worked without a hitch: The heat was cozy and never uncomfortable, and the hand-warming pockets left no need for gloves. Mark Ellwood, WSJ, "This Jacket Fights the Cold With AI," 26 Oct. 2018 Because the styler uses air instead of heat, hair has to be at a certain amount of dampness in order to be styled. Dami Lee, The Verge, "The $500 Dyson Airwrap styler vacuums up wet hair to curl it," 10 Oct. 2018 Police said the air conditioning problem may also have caused heat stroke symptoms for some other patients who survived. Mari Yamaguchi, The Seattle Times, "Japanese police probe 4 hospital deaths after air-con failed," 28 Aug. 2018 When Strzok went before Congress today, the heat was on. Jayme Deerwester, USA TODAY, "Stephen Colbert recaps 'Red-Hot Congressional Strzok-Fest 2018'," 13 July 2018 Zierden said another way to consider summer heat is the number of days the thermometer hits 100. Kevin Spear, OrlandoSentinel.com, "Orlando could sizzle this week with hottest weather of the year," 11 July 2018 Residents lined up for water under the scorching sun as temperatures rose to 35 Celsius (95 Fahrenheit), raising risks of heat stroke. Washington Post, "Many out of power, water in flood-hit Japan; over 150 dead," 10 July 2018 While heat can be hard to quantify, USC’s numbers are eye-opening. Alex Bhattacharji, Town & Country, "Can USC Survive Scandal and Shed Its Spoiled-Kid Reputation Once and For All?," 10 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heat.' 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 heat

Verb

before the 12th century, in the meaning defined at intransitive sense 1

Noun

before the 12th century, in the meaning defined at sense 1a(1)

History and Etymology for heat

Verb

Middle English heten, from Old English hǣtan; akin to Old English hāt hot

Noun

Middle English hete, from Old English hǣte, hǣtu; akin to Old English hāt hot

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Statistics for heat

Last Updated

17 Dec 2018

Look-up Popularity

Time Traveler for heat

The first known use of heat was before the 12th century

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More Definitions for heat

heat

verb

English Language Learners Definition of heat

 (Entry 1 of 2)

: to cause (something) to become warm or hot

heat

noun

English Language Learners Definition of heat (Entry 2 of 2)

: energy that causes things to become warmer

: hot weather or temperatures

: the level of temperature that is used to cook something

heat

verb
\ˈhēt \
heated; heating

Kids Definition of heat

 (Entry 1 of 2)

: to make or become warm or hot

heat

noun

Kids Definition of heat (Entry 2 of 2)

1 : a condition of being hot : warmth We enjoyed the heat of the fire.

2 : hot weather heat and humidity

3 : a form of energy that causes an object to rise in temperature

4 : strength of feeling or force of action In the heat of anger, I said some cruel things.

5 : a single race in a contest that includes two or more races

\ˈhēt \

Medical Definition of heat 

(Entry 1 of 2)

: to become warm or hot

transitive verb

: to make warm or hot

heat

noun

Medical Definition of heat (Entry 2 of 2)

1a : the state of a body or of matter that is perceived as opposed to cold and is characterized by elevation of temperature : a condition of being hot especially : a marked or notable degree of this state : high temperature

b(1) : a feverish state of the body : pathological excessive bodily temperature (as from inflammation) knew the throbbing heat of an abscess the heat of the fever

(2) : a warm flushed condition of the body (as after exercise) : a sensation produced by or like that produced by contact with or approach to heated matter

c(1) : added energy that causes substances to rise in temperature, fuse, evaporate, expand, or undergo any of various other related changes, that flows to a body by contact with or radiation from bodies at higher temperatures, and that can be produced in a body (as by compression)

(2) : the energy associated with the random motions of the molecules, atoms, or smaller structural units of which matter is composed

2 : sexual excitement especially in a female mammal specifically : estrus

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More from Merriam-Webster on heat

Rhyming Dictionary: Words that rhyme with heat

Thesaurus: All synonyms and antonyms for heat

Spanish Central: Translation of heat

Nglish: Translation of heat for Spanish Speakers

Britannica English: Translation of heat for Arabic Speakers

Britannica.com: Encyclopedia article about heat

Comments on heat

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