tr.v., -tured, -tur·ing, -tures.

1. To change the nature or natural qualities of.
2. To render unfit to eat or drink without destroying usefulness in other applications, especially to add methanol to (ethyl alcohol).
3. Biochemistry.
   1. To cause the tertiary structure of (a protein) to unfold, as with heat, alkali, or acid, so that some of its original properties, especially its biological activity, are diminished or eliminated.
   2. To cause the paired strands of (double-stranded DNA) to separate into individual single strands.
4. Physics. To add nonfissionable matter to (fissionable material) so as to prevent use in an atomic weapon.

denaturant de·na'tur·ant n.
denaturation de·na'tur·a'tion n.

To deprive a substance of its natural qualities, e.g. by heating a protein to destroy its specific biological activity.

Dansk (Danish)
v. tr. - denaturere

Nederlands (Dutch)
denatureren (ongeschikt maken voor gebruik)

Français (French)
v. tr. - dénaturer

Deutsch (German)
v. - denaturieren, ungenießbar machen

Ελληνική (Greek)
v. - νοθεύω, αλλοιώνω

Italiano (Italian)
denaturare

Português (Portuguese)
v. - desnaturar

Русский (Russian)
лишать природных свойств

Español (Spanish)
v. tr. - desnaturalizar, alterar el estado original

Svenska (Swedish)
v. - denaturera

中文（简体） (Chinese (Simplified))
使改变本性

中文（繁體） (Chinese (Traditional))
v. tr. - 使改變本性

한국어 (Korean)
v. tr. - ~의 인간미를 제거하다, (단백질, 핵연료를) 성질 변화 시키다

日本語 (Japanese)
v. - 本性を奪う, 変性する

العربيه (Arabic)
‏(فعل) يفقد شئ خواصه الطبيعيه, يجعله غير صالح للشرب أو الأكل‏

עברית (Hebrew)
v. tr. - ‮השחית טעמו, פיגל‬

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