[countable, usually singular] (also ˌarithmetic ˈmean) the average calculated by adding together all the numbers in a group, and dividing the total by the number of numbers平均数；平均值◆Wall Street analysts expect a mean of 93 cents per share.华尔街分析师们预期平均收益为每股 93 分。  ➡  median  ➡  see note at average