mixin
- n. （计算机）混入，混入类（亦作 mix-in）：面向对象编程中可被其他类组合或引入，用于在不通过继承的情况下提供方法或行为、实现代码复用的类或模块；（CSS）混合指令：Sass 等样式预处理器中可复用、常带参数的样式代码块。
Mixin
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abstract:
In object-oriented programming languages, a mixin is a class which contains a combination of methods from other classes. How such combination is done depends on language, but it is not by inheritance.
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WordNet