body mass index

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body mass index

n. Abbr. BMI
A measurement of the relative percentages of fat and muscle mass in the human body, in which weight in kilograms is divided by height in meters squared and the result used as an index of obesity.

body mass index

n
(Medicine) an index used to indicate whether a person is over- or underweight. It is obtained by dividing a person's weight in kilograms by the square of their height in metres. An index of 20–25 is normal. Abbreviation: BMI
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Noun1.body mass index - 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
index number, indicator, index, indicant - a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time