Added 10 October 2026 denaturation /diːˌnætʃəˈɹeɪʃən/ noun Categories: Rare Words noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about denaturation at Wordnik → Where our words come from → The deliberate addition of a noxious substance to alcohol to make it unfit to drink The change of folding structure of a protein (and thus of physical properties) caused by heating, changes in pH, or exposure to certain chemicals. Related Words: degenerativedistortionmisrepresentationtranssexualdenaturatingdenaturizationdenaturisationalcoholizationdealcoholizationalcohololysisalcoholisationdesaturation Back to today's word