Real Dictionary

chelate in American English
a chemical compound in which the central atom (usually a metal ion) is attached to neighboring atoms by at least two coordinate bonds in such a way as to form a closed chain
resembling or having chelae
to cause (a metal ion) to react with another molecule to form a chelate
adjective: of or noting a heterocyclic compound having a central metallic ion attached by covalent bonds to two or more nonmetallic atoms in the same molecule
intransitive verb: to react to form a chelate
noun: a chelate compound
transitive verb: to combine (an organic compound) with a metallic ion to form a chelate

chelate in British English
adjective: of or possessing chelae
noun: a coordination compound in which a metal atom or ion is bound to a ligand at two or more points on the ligand, so as to form a heterocyclic ring containing a metal atom
verb: to form a chelate