Definition of "chelation" [chelation]

• The formation of a polydentate chelate compound from a metal salt (noun)
• The use of this process to remove metal ions from solution, especially to counter poisoning by heavy metals (noun)

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• "• FDA warns companies promoting products used in chelation procedures: The agency warned several companies that the substances they sell without a prescription for a procedure known as "chelation" are "unapproved drugs and devices.""
• "The FDA took the action after noticing an increase in 'chelation therapy' products marketed on the Internet that claim to cleanse the body of toxic chemicals and heavy metals."
• "Children younger than 6 years old with very high lead levels will benefit from a therapy called chelation, says Goldman."