denature

动词 denature:

1. add nonfissionable material to (fissionable material) so as to make unsuitable for use in an atomic bomb
2. modify (as a native protein) especially by heat, acid, alkali, or ultraviolet radiation so that all of the original properties are removed or diminished
3. make (alcohol) unfit for drinking without impairing usefulness for other purposes

de.na.ture

v.tr.（及物动词）
de.na.tured,de.na.tur.ing,de.na.tures
To change the nature or natural qualities of.
使性质改变：改变…的性质或自然属性
To render unfit to eat or drink without destroying usefulness in other applications, especially to add methanol to (ethyl alcohol).
使变性：使食物和饮料变质而不破坏这些物质用于其它目的的用途，尤指（在乙醇中）加甲烷
Biochemistry To alter the structure of (a protein), as with heat, alkali, or acid, so that some of its original properties, especially its biological activity, are diminished or eliminated.
【生物化学】 使变质：改变（蛋白质的）结构，例如通过加热、加碱、加酸等等，以减少或消除（蛋白质）原有的某些特性，尤指其生物特性
Physics To add nonfissionable matter to (fissionable material) so as to prevent use in an atomic weapon.
【物理学】 使（核材料）中毒：（向可裂变材料中）加入不可裂变物质以防止（这种可裂变物质）用于原子核武器

【引伸】
dena.turant
n.（名词）
dena.tura.tion
n.（名词）