Pronunciation: (kē-lā'shun), [key]
1. Chem.the process of chelating.
a. a method of removing certain heavy metals from the bloodstream, used esp. in treating lead or mercury poisoning.
b. a controversial treatment for arteriosclerosis that attempts to remove calcium deposits from the inner walls of the coronary arteries.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.