chelate

from WordNet (r) 3.0 (2006)
chelate
    adj 1: relating to or characterized by chelation [syn:
           {chelate}, {chelated}]
    2: having or resembling chelae or claws
    n 1: a heterocyclic compound having a metal ion attached by
         coordinate bonds to at least two nonmetal ions [syn:
         {chelate}, {chelate compound}]
    v 1: form a chelate, in chemistry
from The Collaborative International Dictionary of English v.0.48
Chelate \Che"late\, a. (Zool.)
   Same as {Cheliferous}.
   [1913 Webster]
from The Collaborative International Dictionary of English v.0.48
chelate \che"late\, 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.
   [PJC]
antiflux / dictionary / chelate
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