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Definitions for: Heat
[n] utility to warm a building; "the heating system wasn't working"; "they have radiant heating"
[n] intense passion or emotion
[n] the presence of heat
[n] the sensation caused by heat energy
[n] a form of energy that is transferred by a difference in temperature
[n] applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
[v] make hot or hotter; "heat the soup"
[v] gain heat or get hot; "The room heated up quickly"
[v] arouse or excite feelings and passions; "The ostentatious way of living of the rich ignites the hatred of the poor"; "The refugees' fate stirred up compassion around the world"; "Wake old feelings of hatred"
[v] provide with heat; "heat the house"
Webster (1913) Definition: 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, 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, 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, imp. & p. p. of Heat.
Heated; as, the iron though heat red-hot. [Obs. or Archaic.]
--Shak.
Synonyms: estrus, fire up, heat energy, heat up, heating, heating plant, heating system, high temperature, hotness, ignite, inflame, oestrus, passion, rut, stir up, wake, warmth, warmth
Antonyms: anestrum, anestrus, anoestrum, anoestrus, chill, cold, coldness, cool, cool down, low temperature
See Also: alter, arouse, bake, boiler, broil, building, calcine, calefaction, central heating, change, change state, crisp, edifice, elicit, emotionalism, emotionality, energy, enkindle, evoke, ferment, fieriness, fire, fry, furnish, gas heat, heat, heat of dissociation, heat of formation, heat of solution, heat of transformation, hot up, incalescence, kindle, latent heat, overheat, panel heating, physiological condition, physiological state, preheat, provide, provoke, radiator, raise, red heat, reheat, render, scorch, sear, soak, specific heat, steam boiler, steam heat, steam heating, steam-heat, supply, temperature, temperature, toast, torridity, turn, utility, warmness, white heat
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