| 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.
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| 19. | Metallurgy.
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| 20. | Zoology.
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| 21. | to make hot or warm (often fol. by up). |
| 22. | to excite emotionally; inflame or rouse with passion. |
| 23. | to become hot or warm (often fol. by up). |
| 24. | to become excited emotionally. |
| 25. | heat up, to increase or become more active or intense: Business competition will heat up toward the end of the year. |
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.)
heat
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heat (hēt)
n.
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.
The sensation or perception of such energy as warmth or hotness.
An abnormally high bodily temperature, as from a fever.
Estrus.