a ligand that forms chelates.
Also called che·la·tor [kee-ley-ter] /ˈki leɪ tər/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a chemical compound that coordinates with a metal to form a chelate, often used to trap or remove heavy metal ions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012