Etymology : Middle English heten, from Old English h[AE]tan; akin to Old English hAt hot
Pronunciation : 'hEt
Function : verb
Date : before 12th century
1. (abbr.) High explosive anti-tank (HEAT).
2. warmth, high temperature; excitement, passion; early part of a race; state of being prepared for sexual activity (in female animals). become hot; make hot. to get mad. heat\heat\ , n. [oe. hete, h?te, as. h tu, h to, fr. hāt hot; akin to ohg. heizi heat, dan. hede, sw. hetta. see:
hot.].
3. 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.
4. 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.
5. 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!.
6. 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. the heats smiths take of their iron are a blood-red heat, a white-flame heat, and a sparking or welding heat.
7. 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.
8. 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. [he] struck off at one heat the matchless tale of "tam o'shanter." c. shairp.
9. utmost violence; rage; vehemence; as, the heat of battle or party. "the heat of their division.".
10. agitation of mind; inflammation or excitement; exasperation. "the head and hurry of his rage.".
11. animation, as in discourse; ardor; fervency. with all the strength and heat of eloquence.
12. sexual excitement in animals.
13. fermentation.
14. 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.
15. In its nature heat is a mode of motion, being in general a form of molecular disturbance or vibration.
16. It was formerly supposed to be a subtile, imponderable fluid, to which was given the name caloric.
17. 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.
18. 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.
19. 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.
20. 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.
21. 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.
22. Utmost violence; rage; vehemence; as, the heat of battle or party.
23. Agitation of mind; inflammation or excitement; exasperation.
24. Animation, as in discourse; ardor; fervency.
25. Sexual excitement in animals.
26. Fermentation.
27. To make hot; to communicate heat to, or cause to grow warm; as, to heat an oven or furnace, an iron, or the like.
28. To excite or make hot by action or emotion; to make feverish.
29. To excite ardor in; to rouse to action; to excite to excess; to inflame, as the passions.
30. 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.
31. 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.
32. Heated; as, the iron though heat red- hot. intense passion or emotion the sensation caused by heat energy a preliminary race in which the winner advances to a more important race a form of energy that is transferred by a difference in temperature make hot or hotter; "heat the soup" gain heat or get hot; "The room heated up quickly" provide with heat; "heat the house".
33. 1. When you heat something, you raise its temperature, for example by using a flame or a special piece of equipment. Meanwhile, heat the tomatoes and oil in a pan. heated swimming pools.
34. Heat is warmth or the quality of being hot. The seas store heat and release it gradually during cold periods.
35. The heat is very hot weather. As an asthmatic, he cannot cope with the heat and humidity.
36. The heat of something is the temperature of something that is warm or that is being heated. Adjust the heat of the barbecue by opening and closing the air vents.
37. You use heat to refer to a source of heat, for example a cooking ring or the heating system of a house. Immediately remove the pan from the heat.
38. You use heat to refer to a state of strong emotion, especially of anger or excitement. It was all done in the heat of the moment and I have certainly learned by my mistake.
39. The heat of a particular activity is the point when there is the greatest activity or excitement. Last week, in the heat of the election campaign, the Prime Minister left for America.
40. A heat is one of a series of races or competitions. The winners of a heat take part in another race or competition, against the winners of other heats. the heats of the men's 100m breaststroke. see also:
dead heat.
41. When a female animal is on heat in British English, or in heat in American English, she is in a state where she is ready to mate with a male animal, as this will probably result in her becoming pregnant. to make something become warm or hot = warm up. Energy transferred from one body to another as the result of a difference in temperature. Heat flows from a hotter body to a colder body when the two bodies are brought together. This transfer of energy usually results in an increase in the temperature of the colder body and a decrease in that of the hotter body. A substance may absorb heat without an increase in temperature as it changes from one phase to another that is, when it melts or boils. The distinction between heat (a form of energy) and temperature (a measure of the amount of energy) was clarified in the 19th century by such scientists as J.-B. Fourier, Gustav Kirchhoff, and Ludwig Boltzmann. heat capacity heat exchanger heat exhaustion heat prostration heat pump heat treating latent heat reaction heat of specific heat induction heating radiant heating solar heating.
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