Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Zoology Having chelae or resembling a chela.
  • n. Chemistry A chemical compound in the form of a heterocyclic ring, containing a metal ion attached by coordinate bonds to at least two nonmetal ions.
  • transitive v. Chemistry To combine (a metal ion) with a chemical compound to form a ring.
  • transitive v. Medicine To remove (a heavy metal, such as lead or mercury) from the bloodstream by means of a chelate, such as EDTA.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having chelae, or in the form of a chela
  • n. a chelate compound
  • v. (chemistry) to form a chelate compound by combining a metal atom to form a ring
  • v. (medicine) to remove heavy metals from the bloodstream using a chelate (such as EDTA)

from the GNU version of the Collaborative International Dictionary of English

  • adj. Same as cheliferous.
  • n. a compound formed by combination of a metal ion in solution with a compound containing heteroatoms (such as oxygen or nitrogen), in which at least two heteroatoms are bound to the metal. The bonds may be covalent or non-covalent. Chelates in some cases have very low dissociation constants, and organic compounds (chelating agents) which form such chelates are therefore used to reduce the concentration of free metal ions in solution.

from The Century Dictionary and Cyclopedia

  • Having a chela; terminated by a chela or forceps-joint.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. relating to or characterized by chelation
  • n. a heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions
  • v. form a chelate, in chemistry
  • adj. having or resembling chelae or claws

Etymologies

From chela +‎ -ate. (Wiktionary)

Examples

  • · Acts as a chelate, that is, it forms compounds with metal nutrients (usually iron, zinc, copper, or manganese) increasing their solubility and availability to plants.

    5. How plants live and grow

  • We use only the finest and most advanced blend of creatine including magnesium creatine chelate, which is a patented form of the molecule that has been shown to boost strength after only 2 weeks of use.

    Wil's Ebay E-Store

  • At about 10: 00 am, under the direction of Dr. Kerry, Abubakar's arm was cleaned with alcohol, and EDTA (ethylene diamine tetraacetic acid), a chelate, was directly injected into the boy's bloodstream.

    Op-eds on vaccines by Paul Offit, MD

  • He believed he could rid Abubakar's body of the cause of his autism by using chelation therapy, a technique used to remove heavy metals such as lead, arsenic and mercury from the body by introducing chemicals that will attach to (or chelate) metals in the bloodstream or body tissues and then enhance their excretion from the body.

    Op-eds on vaccines by Paul Offit, MD

  • Succimer is a heavy metal chelating agent that, in vitro, forms stable water soluble complexes with lead4 and consequently increases the urinary excretion of lead. 2-9 Succimer has also been found to chelate other toxic heavy metals such as arsenic10 and mercury. 11

    Succimer

  • Iron sulfate or iron chelate will turn the lawn green within two days if it's low on iron.

    A summertime tune-up for your yard

  • The most important thing we did was to have his dental fillings15 removed safely † and slowly chelate out the mercury.

    The UltraMind Solution

  • Iron (as chelate), 8 to 12 mg (only for menstruating women)

    The UltraMind Solution

  • But magnesium citrate is a salt of magnesium, not a chelate.

    Talking diet with your doctor | The Blog of Michael R. Eades, M.D.

  • The chelating agent – aspartate, for example – is required in large amounts, and sometime manufacturers list the total weight of the magnesium plus the chelate, giving a weight for a dosage that many people assume is the weight of the magnesium alone.

    Talking diet with your doctor | The Blog of Michael R. Eades, M.D.

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