Meaning

verb add nonfissionable material to (fissionable material) so as to make unsuitable for use in an atomic bomb

verb modify (as a native protein) especially by heat, acid, alkali, or ultraviolet radiation so that all of the original properties are removed or diminished

verb make (alcohol) unfit for drinking without impairing usefulness for other purposes

originEtymology tree Old French desnaturer French dénaturerbor. English denature English -ed English denatured From denature + -ed.

Etymology from Wiktionary, CC BY-SA 3.0