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 0º Centigrade, or 32º Fahrenheit.

HEAT
Heat, v. t. [imp. & p. p. Heated; p. pr. & vb. n. Heating.] Etym:
[OE. heten, AS. h, fr. hat 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
Heat, v. i.