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Comprehensive
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heat prostration see "heat exhaustion."
heat pump a device for heating or cooling a building by transferring heat from a low-temperature reservoir by means of a compressor and a heat exchanger.
heat rash an acute skin condition resulting from inflammation of the sweat glands; miliaria.
heatstroke a condition caused by exposure to excessive heat and characterized by high fever, headaches, high body temperatures, and in severe cases convulsions or coma. (See sunstroke.)
heat up to make or become warm or hot. [2 definitions]
heat wave a period of unusually hot weather.
heave to push (something or someone) up or out with great effort. [11 definitions]
heaven (often cap.) in some religions, the abode of God, where the souls of the good and faithful will dwell after death. [5 definitions]
heavenly of or pertaining to heaven or the heavens. [2 definitions]
heavenward to or toward heaven. [2 definitions]
heavily with or as if with a heavy weight. [4 definitions]
heaviness the condition or quality of being heavy; weight.
Heaviside layer see "E layer."
heavy having much weight. [10 definitions]
heavy-duty made to last through intensive or unusually rough use.
heavy-handed not adept or skillful; without dexterity or talent for precision; awkward; clumsy. [2 definitions]
heavy-hearted burdened by sadness; depressed; dejected; melancholy.
heavy hydrogen an isotope of hydrogen with a mass number greater than one; deuterium.
heavy-laden heavily loaded, as a vehicle or pack animal. [2 definitions]
heavy metal a variety of rock music featuring highly amplified sound and insistent rhythms.
heavyset having a stocky, stout body.