antifreeze noun 3adjective 1forms 1 noun3 •A substance, such as glycol, used to lower the freezing point of water. •Automotive antifreeze, a solution of ethylene glycol, used as an additive to water or a replacement for water, in the radiator of a motorcar. •A deicer, a heated glycol solution used to remove ice from the aerodynamic surfaces of an airplane, and to prevent icing while on the tarmac. adjective1 •Of or pertaining to such a substance. formsantifreezes
