Reaction 3 : (1) The counterforce or backward thrust caused by the acceleration of water leaving a nozzle. See: also: Kickback. (2) A Chemical Change in Which Elements and Compounds Are Combined To Produce Different Chemical Combinations
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}