adjective: an exothermic reaction is a chemical reaction in which heat is produced, not absorbed.
Russell
"Negative electricity is force radiated in the direction of pressure assistance. Negative intensity decreases with expansion due to pressure assistance in streams flowing in same direction. Negative electricity is the dissipating, separating exothermic force of expansion which seeks lower pressures." [Russell, from chart: The Cosmic Pendulum]
See Also
7B.19 - Light and Heat
12.29 - Origin and Nature of Heat
12.31 - Heat Generated Through Resistance to Compression
endothermic
Heat
heat-imparting
Law of Heat
Radiation
Syntropy