disrotatoryWiktionary 原文英美构词拆解disdis-前缀rotatoryrotatory词干dis-Not, the reverse of. (Especially forming words with a negative connotation) · Expressing separation or removal.词源说明From dis- + rotatory.释义形容词adjective1(organic chemistry) Describing an electrocyclic reaction in which the substituents at the interacting termini of the conjugated system rotate in opposite senses