Heat - Definition - Law Dictionary Home Dictionary Definition heat

Definition :

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 suns 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