Look up: chelation

1. Chelation
   The trapping of a multi-valent ionic species by ionic bonding to a larger water soluble molecule so as to render the ion inactive in the biological matrix and to aid excretion.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
2. chelation
   [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. [n] - the process of forming a ring by forming one or more hydrogen bonds
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. Chelation
   Using a chelating agent that will bind with metals in order to try to release them from the body. With autism, this might be done in order to test for mercury levels.
   Found on http://www.insidethebubble.co.uk/glossar
   
   
4. chelation
   The formation or presence of bonds (or other attractive interactions) between two or more separate binding sites within the same ligand and a single central atom. A molecular entity in which there is chelation (and the corresponding chemical species) is called a 'chelate'. The terms bidentate (or di...
   Found on http://www.chem.qmul.ac.uk/iupac/gtpoc/C
   
   
5. Chelation
   In chemistry, this describes the combination of a metallic ion with heterocyclic ring structures in such a way that the ion is held by bonds from each of the rings.
   Found on http://www.chemicalglossary.net/definiti
   
   
6. Chelation
   In chemistry, this describes the combination of a metallic ion with heterocyclic ring structures in such a way that the ion is held by bonds from each of the rings.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
7. chelation
   A chemical process involving formation of a heterocyclic ring compound that contains at least one metal cation or hydrogen ion in the ring.
   Found on http://www.encyclo.co.uk/local/20742
   
   
8. Chelation
   Chemical means of removing heavy metals, such as mercury from the body. Some people believe that autism is caused by an excess of heavy metals in people with autism.
   Found on http://www.researchautism.net/glossary.i
   
   
9. chelation
   the process whereby certain organic molecules combine firmly with metallic ions to form chelates Category: agriculture, fisheries, forestry - food processing industries
   Found on http://www.mijnwoordenboek.nl/definition
   
   
10. chelation
    Binding of a metal ion by a larger molecule such as EDTA or protein (iron in haem is held as a chelate). The binding is strong but reversible and chelating agents can be used to buffer the free concentration of the ion in question.
    Found on http://www.encyclo.co.uk/visitor-contrib
    
    
11. chelation
    <biochemistry, chemistry> Combination with a metal in complexes in which the metal is part of a ring. ... (21 May 1997) ...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
12. chelation
    (ke-la´shәn) combination with a metal in complexes in which the metal is part of a ring. See also chelate.
    Found on http://www.encyclo.co.uk/local/21001
    
    
13. chelation
    combination with a metal in complexes in which the metal is part of a ring.
    Found on http://users.ugent.be/~rvdstich/eugloss/
    
    
14. chelation
    Type: Term Pronunciation: kē-lā′shŭn Definitions: 1. Complex formation involving a metal ion and two or more polar groupings of a single molecule; in heme, the Fe2+ ion is chelated by the porphyrin ring. Chelation can be used to remove an ion from participation in biologic react...
    Found on http://www.medilexicon.com/medicaldictio
    
    
15. Chelation
    Chelation is 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. The ligand forms a che...
    Found on http://en.wikipedia.org/wiki/Chelation
    
    
16. Chelation
    Chemical weathering process that involves the extraction or metallic cations from rocks and minerals by chelates.
    Found on http://www.physicalgeography.net/physgeo
    
    
17. chelation
    A chemical process involving formation of a heterocyclic ring compound that contains at least one metal cation or hydrogen ion in the ring
    Found on http://www.encyclo.co.uk/local/21115
    
    
18. chelation
    A chemical reaction in which a certain type of organic compound, known as a chelating agent, combines with a metal ion by forming coordinate bonds with two or more atoms of the organic compound. Examples of chelating agents include tartaric acid (CHOHCOOH)₂ and ethylenediamine...
    Found on http://www.daviddarling.info/encyclopedi