1 [C,U] reduction (in sth) the action of becoming or making sth less or smaller 减少；减低: a sharp reduction in the number of students 学生人数的骤减

2 [C] the amount by which sth is made smaller, especially in price 减幅，减少的数量（尤指价格）: There were massive reductions in the June sales. 六月份大减价期间，货品大幅削价。