皮尔士

I define a Sign as anything which is so determined by something else, called its Object, and so determines an effect upon a person, which effect I call its Interpretant, that the latter is thereby mediately determined by the former.

中文翻译：我把符号定义为这样一种东西：它由另一事物——即对象——所决定，并在人那里产生一种我称为解释项的效果，而这个解释项又由对象间接决定。

思想提示：这一定义把符号、对象与解释项连接成过程，说明意义不是孤立标签，而是在解释活动中形成。