Main Entry: an·ti·freeze

Pronunciation: \ˈan-ti-ˌfrēz\

Function: noun

Date: 1924

1 : a substance added to a liquid (as the water in an automobile engine) to lower its freezing point
2 : any of various substances (as proteins or alcohols) that are found in some living organisms (as certain fish and insects) and serve to lower the freezing point of body fluids especially by limiting ice crystal growth