Body mass index

n. BMI, index of healthy weight in people in relation to height (weight in kilograms is divided by the square of height in meters)

Body mass index (BMI) or Quetelet Index is a statistical measure of the weight of a person scaled according to height. It was invented between 1830 and 1850 by the Belgian polymath Adolphe Quetelet during the course of developing "social physics".
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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 mass in kilograms is [more]Body mass index - Community and Resources

a measure used to evaluate body weight relative to a person's height. BMI is used to find out if a person is underweight, normal weight, overweight, or obese.| To find BMI: Multiply body weight in pounds by 703. Divide that number by height in inches. Divide that number by height in inches again. Find the resulting numberin the chart below. Below 18.5 is underweight. 18.5–24.9 is normal. 25.0–29.9 is overweight. 30.0 and above is obese.