HEAT n.
h 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…
IN- n.
An inseparable prefix, or particle, meaning not, non-, un- as, inactive, incapable, inapt. In- regularly becomes il- before l, ir- before r, and im- before a labial.
INDEFINITE a.
mportant; -- said of the parts of a flower, and the like. Also, indeterminate. Indefinite article (Gram.), the word a or an, used with nouns to denote any one of a common or general class. -- Indefinite inflorescence. (Bot.) See Indeterminate inflorescence, under Indeterminate. -- Indefinite proposition (Logic), a st…