reduction/rIˋdʌkʃən; rIˈdʌkʃ$n/n [C,U] a decrease in the size, amount, or price of something, or when something is decreased〔尺寸的〕缩小﹔〔数量的〕减少﹔〔价格的〕降低: +in a reduction in the number of students choosing science 选择理科的学生人数的减少+of targets for the reduction of pollution 减少污染的目标+on There are 40% reductions on winter shoes. 冬鞋六折优惠。