Meaning of carbohydrate loading

carbohy'drate load"ing

Pronunciation: [key]
  1. the practice of eating high amounts of carbohydrates, sometimes after a period of low carbohydrate intake, for several days immediately before competing in an athletic event, esp. a marathon, in order to store glycogen in the body, thereby providing greater reserves of energy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.