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(ht), n.[OE. hete, hte, AS. htu, hto, fr. ht 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 of 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. 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, t Heat (ht), v. t.[imp. & p. p.Heated; p. pr. & vb. n.Heating.] [OE. heten, AS. htan, fr. ht 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 (ht), imp. & p. p. of Heat. Heated; as, the iron though heat red-hot. [Obs. or Archaic] Shak. スポンサード リンク
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