- (formal)
connected with the relationship between two things, where one causes the other to happen 因果关系的；前因后果的；原因的 the causal relationship between poverty and disease 贫穷与疾病的因果关系
- causal conjunction/connective (
grammar 语法 a word such as because that introduces a statement about the cause of something 表示因果关系的（连接词，如 because）
Word Originlate Middle English (as a noun denoting a causal conjunction or particle): from late Latin causalis, from Latin causa ‘cause’.