a measure of someone's weight in relation to height; to calculate one's BMI, multiply one's weight in pounds and divide that by the square of one's height in inches; overweight is a BMI greater than 25; obese is a BMI greater than 30
双语例句
Obesity is based on the body mass index, a calculation using height and weight. 肥胖是根据身体质量指数，一个用身高和体重计算的结果。
The BMI may not apply to all people since some individuals may have more than normal muscle mass with acceptable levels of body fat. 身体质量指数可能并不适用于所有的人，因为有些人可能比普通人有更多的肌肉而身体脂肪含量也在可以接受的水平。
