denature

denaturoida To take away a natural characteristic or inherent property of a thing or a person.
puhekieltä to add something that makes alcohol unsuitable for consumption but leaves the alcohol suitable for other purposes.
While you cannot drink denatured alcohol, you can still use it to remove sticker glue from most surfaces.
puhekieltä To subject (especially a protein) to conditions altering its original form or state.
To combine fissionable material with nonfissionable material in order to prevent its use in an atomic weapon.