- a single course in or division of a race or other contest.
- a race or other contest in which competitors attempt to qualify for entry in the final race or contest.
- a single operation of heating, as of metal in a furnace, in the treating and melting of metals.
- a quantity of metal produced by such an operation.
- sexual receptiveness in animals, especially females.
- the period or duration of such receptiveness: to be in heat.
verb (used with object)
verb (used without object)
Origin of heat
Synonyms for heat
Antonyms for heat
Related Words for heat upignite, agitate, disturb, rouse, embitter, worsen, infuriate, exacerbate, enrage, roil, rile, arouse, irritate, incense, kindle, provoke, intensify, stimulate, foment, aggravate
- the energy transferred as a result of a difference in temperature
- the random kinetic energy of the atoms, molecules, or ions in a substance or body
- a preliminary eliminating contest in a competition
- a single section of a contest
- Also: in season(of some female mammals) sexually receptive
- in a state of sexual excitement
Word Origin for heat
Old English hætu, hæto "heat, warmth; fervor ardor," from Proto-Germanic *haiti- "heat" (cf. Old Saxon hittia, Old Norse hiti, Old Frisian hete, German hitze "heat," Gothic heito "fever"), from PIE *kaid-, from root *kai- "heat." The same root is the source of Old English hat "hot" and hæða "hot weather" (see hot).
Meaning "a single course in a race," especially a horse race, is from 1660s, perhaps from earlier figurative sense of "violent action; a single intense effort" (late 14c.), or meaning "run given to a horse to prepare for a race" (1570s). This later expanded to "division of a race or contest when there are too many contestants to run at once," the winners of each heat then competing in a final race. Meaning "sexual excitement in animals" is from 1768. Meaning "trouble with the police" attested by 1920. Heat wave "period of excessive hot weather" first attested 1890; earlier in reference to solar cycles.
Become acute or intense, as in If inflation heats up, the interest rate will surely rise, or The debate over the budget was heating up. [Early 1200s]
In addition to the idioms beginning with heat
- heat up
- dead heat
- in heat
- in the heat of the moment
- turn up the heat