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
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 transfer of energy from one body to another as a result of a difference in temperature or a change in phase.
The condition of being hot.
A degree of warmth or hotness: The burner was on low heat.
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.
A furnace or other source of warmth in a room or building: The heat was on when we returned from work.
Intensity, as of passion, emotion, color, appearance, or effect.
The most intense or active stage: the heat of battle.
A burning sensation in the mouth produced by spicy flavoring in food.
Sports & Games One round of several in a competition, such as a race.
A preliminary contest held to determine finalists.
An intensification of police activity in pursuing criminals.
The police. Used with the.
The sensation or perception of such energy as warmth or hotness.
An abnormally high bodily temperature, as from a fever.
The condition of being hot.
A degree of warmth or hotness: The burner was on low heat.
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.
A furnace or other source of warmth in a room or building: The heat was on when we returned from work.
Intensity, as of passion, emotion, color, appearance, or effect.
The most intense or active stage: the heat of battle.
A burning sensation in the mouth produced by spicy flavoring in food.
Sports & Games One round of several in a competition, such as a race.
A preliminary contest held to determine finalists.
An intensification of police activity in pursuing criminals.
The police. Used with the.
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.
A furnace or other source of warmth in a room or building: The heat was on when we returned from work.
Intensity, as of passion, emotion, color, appearance, or effect.
The most intense or active stage: the heat of battle.
A burning sensation in the mouth produced by spicy flavoring in food.
Sports & Games One round of several in a competition, such as a race.
A preliminary contest held to determine finalists.
An intensification of police activity in pursuing criminals.
The police. Used with the.
A hot season; a spell of hot weather.
Intensity, as of passion, emotion, color, appearance, or effect.
The most intense or active stage: the heat of battle.
A burning sensation in the mouth produced by spicy flavoring in food.
Sports & Games One round of several in a competition, such as a race.
A preliminary contest held to determine finalists.
An intensification of police activity in pursuing criminals.
The police. Used with the.
Estrus.
One of a series of efforts or attempts.
Sports & Games One round of several in a competition, such as a race.
A preliminary contest held to determine finalists.
An intensification of police activity in pursuing criminals.
The police. Used with the.
Informal Pressure; stress.
Slang
An intensification of police activity in pursuing criminals.
The police. Used with the.
Slang Adverse comments or hostile criticism: Heat from the press forced the senator to resign.
Slang A firearm, especially a pistol.
v.
heat·ed, heat·ing, heats
v.
tr.
To make warm or hot.
To excite the feelings of; inflame.
To increase the molecular or kinetic energy of (an object).
v.
intr.
To become warm or hot.
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.]
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.
[heet] 
