antifreeze
noun
an·ti·freeze
ˈan-ti-ˌfrēz
1
: a substance added to a liquid (such as the water in an automobile engine) to lower its freezing point
2
: any of various substances (such as proteins or alcohols) that are found in some living organisms (such as certain fish and insects) and serve to lower the freezing point of body fluids especially by limiting ice crystal growth
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Merriam-Webster unabridged
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