Denature

[diː'neɪtʃə] or [di'netʃɚ]

Definition

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

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

Typed by Josephine--From WordNet