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heathen someone who is regarded as being outside a given religious orthodoxy, esp. one not converted to Christianity, Judaism, or Islam; unconverted person. [5 definitions]
heathenize to cause to become heathen or heathenish.
heather any of several common low, shrubby, evergreen plants bearing clusters of tiny, pinkish purple, bell-shaped flowers.
heathless combined form of heath.
heating pad a pad containing insulated electric heating elements in a soft fabric covering, used to apply heat, as to a sore muscle.
heatless combined form of heat.
heat lightning lightning without thunder, seen esp. on hot evenings and believed to be reflections of more distant lightning.
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.
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]