chelate
Concise Oxford English Dictionary © 2008 Oxford University Press:
chelate /ˈkiːleɪt/
▶noun Chemistry a compound containing an organic ligand bonded to a central metal atom at two or more points. ▶adjective Zoology (of an appendage) bearing chelae. ▶verb Chemistry form a chelate with.
– derivatives
chelation noun,
chelator noun.
chelation noun,
chelator noun.
'chelate' also found in these Oxford entries:

