In Darwin's day there was no rigid definition of the term "Darwinism", and it was used by opponents and proponents of Darwin's biological theory alike to mean whatever they wanted it to in a larger context.
达尔文时期，“达尔文主义”并没有严格的定义，它被达尔文生物理论的反对者和支持者同时使用，来表示他们认为更宽的范围内的含义。