body mass index
Pronunciation: (BAH-dee mas IN-dex)
A measure that relates body weight to height. BMI is sometimes used to measure total body fat and whether a person is a healthy weight. Excess body fat is linked to an increased risk of some diseases including heart disease and some cancers. Also called BMI.
Source: NCI Dictionary of Cancer Terms2006-08-24 Date last modified: 2007-01-18