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denature

Pronunciation: /diːˈneɪtʃə/

Definition of denature

verb

[with object] (often as adjective denatured)

take away or alter the natural qualities of:many forms of packaged and denatured culture
make (alcohol) unfit for drinking by the addition of toxic or foul-tasting substances.
Biochemistry destroy the characteristic properties of (a protein or other biological macromolecule) by heat, acidity, or other effect which disrupts its molecular conformation.