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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.
tr.v. che·lat·ed, che·lat·ing, che·lates
1. Chemistry To combine (a metal ion) with a chemical compound to form a ring.
2. Medicine To remove (a heavy metal, such as lead or mercury) from the bloodstream by means of a chelate, such as EDTA.

che′lat·a·ble adj.
che·la′tion n.
che′la′tor n.


1. (Chemistry) chem the process by which a chelate is formed
2. (Zoology) animal husbandry the process by which trace elements in an animal's feed are bonded to amino acids, ensuring their absorption into the animal's body
3. (Physical Geography) geology the chemical removal of metallic ions in a mineral or rock by weathering


(kiˈleɪ ʃən)

1. 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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chelation - (medicine) the process of removing a heavy metal from the bloodstream by means of a chelate as in treating lead or mercury poisoning
physical process, process - a sustained phenomenon or one marked by gradual changes through a series of states; "events now in process"; "the process of calcification begins later for boys than for girls"
medical specialty, medicine - the branches of medical science that deal with nonsurgical techniques
2.chelation - the process of forming a ring by forming one or more hydrogen bonds
chemical action, chemical change, chemical process - (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved


n quelación f; — therapy terapia quelante
References in periodicals archive ?
It is comprised of at least one surfactant selected from the group consisting of anionic, nonionic, cationic, zwitterionic, amphoteric surfactants, and mixtures thereof; benzyl alcohol; ethanol; at least one hydrotrope; a single antibacterial active selected from the group consisting of halogenated benzyl alcohol derivatives, halogenated hydroxydiphenylethers, quaternary ammonium salts, a peroxide bleach system; and at least one sequestering agent.
Wash fabric 80 to 90oC for 45 to 75 minutes flowed by hot washer at 80 to 90oC with 1 to 2g/l sequestering agent.
General topics include actinide physics, with comparative studies on actinide metals, nitrides and hydrides, plutonium and uranium metallurgy, including long-term studies on aging behaviors, and actinide chemistry, including structural characteristics of a plutonium sequestering agent complex by synchotron x-ray diffraction.
Comments: Dispersion 610 is a chelating or sequestering agent for litho inks (heatset/sheetfed) applications, developed to lock up unwanted metal ions derived from pigments, hard mineral water, paper pulps and paper extenders.
If a client's source water comes from a well, chances are it's rife with minerals and a sequestering agent may be needed.
Stubborn white cloudiness can be solved by adding a polymer sequestering agent to make the tiny particles into bigger particles that are easier to filter out.
The alum acts as an acidifying agent, while zeolite--often used in kitty litter--acts as a sequestering agent, turning slurries into nitrogen-rich, slow-release fertilizer.
The alginate microspheres prepared by a new emulsification method in presence of sequestering agent, sodium polyphosphate.