引子泛指一般事物的开端。可能是:

  • 楔子 (文学),中国传统戏曲、乐曲和章回小说引出正题的段落
  • 药引,中医理论辅助主药、加强药效的副药,也称为“药引子”
  • 引物,DNA复制起始点的一小段单链DNA或RNA

另见

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