denatured

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

(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. Synonyms: denature.

(verb) make (alcohol) unfit for drinking without impairing usefulness for other purposes. Synonyms: denature.

(adj) changed in nature or natural quality. Synonyms: denaturized, denaturised. Example: "Denatured alcohol."