Heat 09 : Energy that is associated with and proportional to molecular motion, and that can be transferred from one body to another by radiation, conduction, and convection. See also: Spontaneous Heating.
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}