transformational rule
Technical term in linguistics, specifically in transformational grammar. Refers to a rule that transforms a deep structure into a surface structure.
Transformational rules are an important concept in Chomsky's generative grammar.
生成文法 is the broader theory of generative grammar, while 変形規則 refers specifically to the transformational rules within that framework.
Compound of 変形 (transformation) and 規則 (rule). A calque from English 'transformational rule'.