/ɪkˈspænd ||; ɪkˈspænd/verb [I,T] to become or to make sth bigger 扩展；扩大: Metals expand when they are heated. 金属遇热膨胀。We hope to expand our business this year. 今年我们想扩充业务。 [OPP] contract 反义词为 contractexpand on sth to give more details of a story, plan, idea, etc 详述（故事、计划、构想等）