American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Zoology Having chelae or resembling a chela.
- n. Chemistry A chemical compound in the form of heterocyclic ring, containing a metal ion attached by coordinate bonds to at least two nonmetal ions.
- v. Chemistry To combine (a metal ion) with a chemical compound to form a ring.
- v. Medicine To remove (a heavy metal, such as lead or mercury) from the bloodstream by means of a chelate, such as EDTA.
Century Dictionary and Cyclopedia
- Having a chela; terminated by a chela or forceps-joint.
- adj. zoology having chelae, or in the form of chela
- n. chemistry a chelate compound
- v. transitive (chemistry) to form a chelate compound by combining a metal atom to form a ring
- v. transitive (medicine) to remove heavy metals from the bloodstream using a chelate (such as EDTA)
GNU Webster's 1913
- adj. (Zoöl.) Same as cheliferous.
- n. (Chem.) 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.
- 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
- From chela + -ate. (Wiktionary)
“· 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.”
“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.”
“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.”
“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.”
“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”
“Iron sulfate or iron chelate will turn the lawn green within two days if it's low on iron.”
“The most important thing we did was to have his dental fillings15 removed safely † and slowly chelate out the mercury.”
“Iron (as chelate), 8 to 12 mg (only for menstruating women)”
“But magnesium citrate is a salt of magnesium, not a chelate.”
“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.”
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