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The Collaborative International Dictionary
chelation

chelation \chelation\ n. the process of removing a heavy metal from a solution by means of a chelate; as (Med.) the treatment of lead or mercury poisoning by adding a chelating agent to the blood.

2. the process of forming a ring by forming one or more hydrogen bonds.

Wiktionary
chelation

n. 1 (context chemistry English) the formation of a polydentate chelate compound from a metal salt 2 (context medicine English) the use of this process to remove metal ions from solution, especially to counter poisoning by heavy metals

WordNet
chelation
  1. n. (medicine) the process of removing a heavy metal from the bloodstream by means of a chelate as in treating lead or mercury poisoning

  2. the process of forming a ring by forming one or more hydrogen bonds

Wikipedia
Chelation

Chelation is a type of bonding of ions and molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central atom. Usually these ligands are organic compounds, and are called chelants, chelators, chelating agents, or sequestering agents.

Chelation is useful in applications such as providing nutritional supplements, in chelation therapy to remove toxic metals from the body, as contrast agents in MRI scanning, in manufacturing using homogeneous catalysts, and in fertilizers.

Usage examples of "chelation".

And there were so many: homeopathy, acupuncture, bipolarized interferon, amygdalin, ion rebalance, meditation, chelation, Kirlian aura manipulation, biofeed-back, quantum energy .

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A well-preserved older man whose age was difficult to determine even with close study, he had access to vigorous antiaging treatments and availed himself of cellular chelation techniques that kept him limber and healthy.

Just order your men to break out the chelation solution, produce the needle, and get on with it.

That suggested a simple revenge: when you returned to Washington for chelation, Dr.

He was considering a treatment called chelation, but after he described it to me, I felt more inclined to wait it out and hope for the best.

Miles wondered if anyone had noticed yet that Weddell didn't have nearly enough chelation solution to check every air filter in ImpSec HQ.