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heat

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heat

  [heet]
Use heat in a Sentence
–noun
1. the state of a body perceived as having or generating a relatively high degree of warmth.
2. the condition or quality of being hot: the heat of an oven.
3. the degree of hotness; temperature: moderate heat.
4. the sensation of warmth or hotness: unpleasant heat.
5. a bodily temperature higher than normal: the heat of a fever; the feeling of heat caused by physical exertion.
6. added or external energy that causes a rise in temperature, expansion, evaporation, or other physical change.
7. Physics. a nonmechanical energy transfer with reference to a temperature difference between a system and its surroundings or between two parts of the same system. Symbol: Q
8. a hot condition of the atmosphere or physical environment; hot season or weather.
9. a period of hot weather.
10. a sharp, pungent flavor, as that produced by strong spices.
11. warmth or intensity of feeling; vehemence; passion: He spoke with much heat and at great length.
12. maximum intensity in an activity, condition, etc.; the height of any action, situation, or the like: the heat of battle; the heat of passion.
13. extreme pressure, as of events, resulting in tension or strain: In the heat of his hasty departure he forgot his keys.
14. a single intense effort; a sustained, concentrated, and continuous operation: The painting was finished at a heat.
15. Slang. intensified pressure, esp. in a police investigation.
16. Slang. the police.
17. Slang. armed protection, esp. a pistol, revolver, or other firearm: All guards carry some heat.
18. Sports.
a. a single course in or division of a race or other contest.
b. a race or other contest in which competitors attempt to qualify for entry in the final race or contest.
19. Metallurgy.
a. a single operation of heating, as of metal in a furnace, in the treating and melting of metals.
b. a quantity of metal produced by such an operation.
20. Zoology.
a. sexual receptiveness in animals, esp. females.
b. the period or duration of such receptiveness: to be in heat.
–verb (used with object)
21. to make hot or warm (often fol. by up).
22. to excite emotionally; inflame or rouse with passion.
–verb (used without object)
23. to become hot or warm (often fol. by up).
24. to become excited emotionally.
—Verb phrase
25. heat up, to increase or become more active or intense: Business competition will heat up toward the end of the year.
Origin:
bef. 900; ME hete, OE hǣtu; akin to G Hitze; see hot

Related forms:
heat⋅a⋅ble, adjective
heatful, adjective
heatless, adjective
heatlike, adjective

Synonyms:
2. hotness, warmth. 3. caloricity. 11. ardor, fervor, zeal, flush, fever, excitement, impetuosity. 22. stimulate, warm, stir, animate.

Antonyms:
1. coolness. 11. indifference. 21. cool.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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heat   (hēt)   
n.   Physics
    1. A form of energy associated with the motion of atoms or molecules and capable of being transmitted through solid and fluid media by conduction, through fluid media by convection, and through empty space by radiation.
    2. The transfer of energy from one body to another as a result of a difference in temperature or a change in phase.
    3. The condition of being hot.
    4. A degree of warmth or hotness: The burner was on low heat.
    5. The warming of a room or building by a furnace or another source of energy: The house was cheap to rent, but the heat was expensive.
    6. A furnace or other source of warmth in a room or building: The heat was on when we returned from work.
    7. Intensity, as of passion, emotion, color, appearance, or effect.
    8. The most intense or active stage: the heat of battle.
    9. A burning sensation in the mouth produced by spicy flavoring in food.
    10. Sports & Games One round of several in a competition, such as a race.
    11. A preliminary contest held to determine finalists.
    12. An intensification of police activity in pursuing criminals.
    13. The police. Used with the.
  2. The sensation or perception of such energy as warmth or hotness.
  3. An abnormally high bodily temperature, as from a fever.
    1. The condition of being hot.
    2. A degree of warmth or hotness: The burner was on low heat.
    3. The warming of a room or building by a furnace or another source of energy: The house was cheap to rent, but the heat was expensive.
    4. A furnace or other source of warmth in a room or building: The heat was on when we returned from work.
    5. Intensity, as of passion, emotion, color, appearance, or effect.
    6. The most intense or active stage: the heat of battle.
    7. A burning sensation in the mouth produced by spicy flavoring in food.
    8. Sports & Games One round of several in a competition, such as a race.
    9. A preliminary contest held to determine finalists.
    10. An intensification of police activity in pursuing criminals.
    11. The police. Used with the.
    1. The warming of a room or building by a furnace or another source of energy: The house was cheap to rent, but the heat was expensive.
    2. A furnace or other source of warmth in a room or building: The heat was on when we returned from work.
    3. Intensity, as of passion, emotion, color, appearance, or effect.
    4. The most intense or active stage: the heat of battle.
    5. A burning sensation in the mouth produced by spicy flavoring in food.
    6. Sports & Games One round of several in a competition, such as a race.
    7. A preliminary contest held to determine finalists.
    8. An intensification of police activity in pursuing criminals.
    9. The police. Used with the.
  6. A hot season; a spell of hot weather.
    1. Intensity, as of passion, emotion, color, appearance, or effect.
    2. The most intense or active stage: the heat of battle.
    3. A burning sensation in the mouth produced by spicy flavoring in food.
    4. Sports & Games One round of several in a competition, such as a race.
    5. A preliminary contest held to determine finalists.
    6. An intensification of police activity in pursuing criminals.
    7. The police. Used with the.
  8. Estrus.
  9. One of a series of efforts or attempts.
    1. Sports & Games One round of several in a competition, such as a race.
    2. A preliminary contest held to determine finalists.
    3. An intensification of police activity in pursuing criminals.
    4. The police. Used with the.
  11. Informal Pressure; stress.
  12. Slang
    1. An intensification of police activity in pursuing criminals.
    2. The police. Used with the.
  13. Slang Adverse comments or hostile criticism: Heat from the press forced the senator to resign.
  14. Slang A firearm, especially a pistol.
v.   heat·ed, heat·ing, heats

v.   tr.
  1. To make warm or hot.
  2. To excite the feelings of; inflame.
  3. To increase the molecular or kinetic energy of (an object).
v.   intr.
  1. To become warm or hot.
  2. To become excited emotionally or intellectually.
Phrasal Verb(s):
heat up Informal To become acute or intense: "If inflation heats up, interest rates could increase" (Christian Science Monitor).

[Middle English hete, from Old English hǣtu; see kai- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Heat

Heat\, n. [OE. hete, h[ae]te, AS. h?tu, h?to, fr. h[=a]t hot; akin to OHG. heizi heat, Dan. hede, Sw. hetta. See Hot.]

1. A force in nature which is recognized in various effects, but especially in the phenomena of fusion and evaporation, and which, as manifested in fire, the sun's rays, mechanical action, chemical combination, etc., becomes directly known to us through the sense of feeling. In its nature heat is a mode if motion, being in general a form of molecular disturbance or vibration. It was formerly supposed to be a subtile, imponderable fluid, to which was given the name caloric.

Note: As affecting the human body, heat produces different sensations, which are called by different names, as heat or sensible heat, warmth, cold, etc., according to its degree or amount relatively to the normal temperature of the body.

2. The sensation caused by the force or influence of heat when excessive, or above that which is normal to the human body; the bodily feeling experienced on exposure to fire, the sun's rays, etc.; the reverse of cold.

3. High temperature, as distinguished from low temperature, or cold; as, the heat of summer and the cold of winter; heat of the skin or body in fever, etc.

Else how had the world . . . Avoided pinching cold and scorching heat! --Milton.

4. Indication of high temperature; appearance, condition, or color of a body, as indicating its temperature; redness; high color; flush; degree of temperature to which something is heated, as indicated by appearance, condition, or otherwise.

It has raised . . . heats in their faces. --Addison.

The heats smiths take of their iron are a blood-red heat, a white-flame heat, and a sparking or welding heat. --Moxon.

5. A single complete operation of heating, as at a forge or in a furnace; as, to make a horseshoe in a certain number of heats.

6. A violent action unintermitted; a single effort; a single course in a race that consists of two or more courses; as, he won two heats out of three.

Many causes . . . for refreshment betwixt the heats. --Dryden.

[He] struck off at one heat the matchless tale of "Tam o'Shanter." --J. C. Shairp.

7. Utmost violence; rage; vehemence; as, the heat of battle or party. "The heat of their division." --Shak.

8. Agitation of mind; inflammation or excitement; exasperation. "The head and hurry of his rage." --South.

9. Animation, as in discourse; ardor; fervency.

With all the strength and heat of eloquence. --Addison.

10. Sexual excitement in animals.

11. Fermentation.

Animal heat, Blood heat, Capacity for heat, etc. See under Animal, Blood, etc.

Atomic heat (Chem.), the product obtained by multiplying the atomic weight of any element by its specific heat. The atomic heat of all solid elements is nearly a constant, the mean value being 6.4.

Dynamical theory of heat, that theory of heat which assumes it to be, not a peculiar kind of matter, but a peculiar motion of the ultimate particles of matter.

Heat engine, any apparatus by which a heated substance, as a heated fluid, is made to perform work by giving motion to mechanism, as a hot-air engine, or a steam engine.

Heat producers. (Physiol.) See under Food.

Heat rays, a term formerly applied to the rays near the red end of the spectrum, whether within or beyond the visible spectrum.

Heat weight (Mech.), the product of any quantity of heat by the mechanical equivalent of heat divided by the absolute temperature; -- called also thermodynamic function, and entropy.

Mechanical equivalent of heat. See under Equivalent.

Specific heat of a substance (at any temperature), the number of units of heat required to raise the temperature of a unit mass of the substance at that temperature one degree.

Unit of heat, the quantity of heat required to raise, by one degree, the temperature of a unit mass of water, initially at a certain standard temperature. The temperature usually employed is that of 0[deg] Centigrade, or 32[deg] Fahrenheit.

Heat

Heat\, v. t. [imp. & p. p. Heated; p. pr. & vb. n. Heating.] [OE. heten, AS. h?tan, fr. h[=a]t hot. See Hot.]

1. To make hot; to communicate heat to, or cause to grow warm; as, to heat an oven or furnace, an iron, or the like.

Heat me these irons hot. --Shak.

2. To excite or make hot by action or emotion; to make feverish.

Pray, walk softly; do not heat your blood. --Shak.

3. To excite ardor in; to rouse to action; to excite to excess; to inflame, as the passions.

A noble emulation heats your breast. --Dryden.

Heat

Heat\, v. i. 1. To grow warm or hot by the action of fire or friction, etc., or the communication of heat; as, the iron or the water heats slowly.

2. To grow warm or hot by fermentation, or the development of heat by chemical action; as, green hay heats in a mow, and manure in the dunghill.

Heat

Heat\, imp. & p. p. of Heat. Heated; as, the iron though heat red-hot. [Obs. or Archaic.] --Shak.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Language Translation for : heat
Spanish: calor; temperatura,
German: die Hitze,die Wärme,
Japanese: 熱
More Translations »

heat

In physics, a form of energy associated with the movement of atoms and molecules in any material. The higher the temperature of a material, the faster the atoms are moving, and hence the greater the amount of energy present as heat. (See infrared radiation.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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heat 
O.E. hætu, hæto, from P.Gmc. *khaitin- "heat," from *khaitaz "hot" (cf. O.S. hittia, O.N. hiti, O.Fris. hete, Ger. hitze "heat," Goth. heito "fever"). The same root is the source of O.E. hat "hot" and hæða "hot weather." The verb is from O.E. hætan, from P.Gmc. *khaitijanam. Meaning "a single course in a race" is from 1663, perhaps from earlier fig. sense of "a single intense effort" (c.1380), or meaning "run given to a horse to prepare for a race" (1577). 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 1893.
Online Etymology Dictionary, © 2001 Douglas Harper
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Main Entry: 1heat
Pronunciation: 'hEt
Function: intransitive verb
: to become warm or hot heat transitive senses
: tomake warm or hot

Main Entry: 2heat
Function: noun
1 a : the state of a body or of matter that is perceived as opposed to cold and is characterized by elevation oftemperature : 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) heat of an abscess> heat of the fever> (2) : a warm flushedcondition 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 causessubstances 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, andthat 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
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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heat (hēt)
n.

  1. A form of energy associated with the motion of atoms or molecules and capable of being transmitted through solid and fluid media by conduction, through fluid media by convection, and through empty space by radiation.
  2. The sensation or perception of such energy as warmth or hotness.
  3. An abnormally high bodily temperature, as from a fever.
  4. Estrus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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heat   (hēt)  Pronunciation Key 
  1. Internal energy that is transferred to a physical system from outside the system because of a difference in temperature and does not result in work done by the system on its surroundings. Absorption of energy by a system as heat takes the form of increased kinetic energy of its molecules, thus resulting in an increase in temperature of the system. Heat is transferred from one system to another in the direction of higher to lower temperature. See also thermodynamics. See Note at temperature.
  2. See estrus.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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heat

In addition to the idioms beginning with heat, also see dead heat; in heat; in the heat of the moment; turn up the heat.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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