antifreeze

noun

1. (countable, uncountable)A substance, such as glycol, used to lower the freezing point of water.
2. (countable, uncountable)Automotive antifreeze, a solution of ethylene glycol, used as an additive to water or a replacement for water, in the radiator of a motorcar.
3. (countable, uncountable)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.

adj

1. Of or pertaining to such a substance.