Pronunciation: (â-rō'biks), [key]
1. Also called aero'bic ex'ercises. (used with a pl. v.) any of various sustained exercises, as jogging, rowing, swimming, or cycling, that stimulate and strengthen the heart and lungs, thereby improving the body's utilization of oxygen.
2. (used with a sing. v.) a physical fitness program based on such exercises: Aerobics is a good way to get your body in shape.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.