DENATURED
denatured, denaturized, denaturised
(adjective) changed in nature or natural quality; “denatured alcohol”
Source: WordNet® 3.1
Etymology
Adjective
denatured (not comparable)
Having been deprived of its nature, having had its nature changed.
Of alcohol made undrinkable, by adding a toxin or unpalatable substance, but still useful as a fuel or solvent. Traditionally by the addition of methanol (wood alcohol) to ethanol (grain alcohol).
Synonyms
• (alcohol): denat. (abbreviation)
Verb
denatured
simple past tense and past participle of denature
Source: Wiktionary
DENATURE
De*na"ture, v. t. [De- + nature.]
Definition: To deprive of its natural qualities; change the nature of.
Source: Webster’s Unabridged Dictionary 1913 Edition