- 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.
- of or noting a compound having a cyclic structure resulting from the formation of one or more hydrogen bonds in the same molecule.
- Zoology. having a chela or chelae.
- Chemistry. a chelate compound.
- (of a heterocyclic compound) to react to form a chelate.
- (of a compound) to form a ring by forming one or more hydrogen bonds.
- Chemistry. to combine (an organic compound) with a metallic ion to form a chelate.
Origin of chelate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for chelate
Appendages of 2nd pair folding in a vertical plane, not chelate, the claw long and movable.
Two pairs of the thoracic feet are chelate, and three pairs are longer than the others.The Sea-beach at Ebb-tide
Augusta Foote Arnold
Chelate: bearing a cheat or claw; applied when claws are capable of being drawn down or back upon the last tarsal joint.Explanation of Terms Used in Entomology
John. B. Smith
- chem 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
- zoology of or possessing chelae
- chem of or denoting a chelate
- (intr) chem to form a chelate
C20: from chela 1
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
Word Origin and History for chelate
Online Etymology Dictionary, © 2010 Douglas Harper
- A chemical compound in the form of a heterocyclic ring, containing a metal ion attached by coordinate bonds to at least two nonmetal ions.
- To combine a metal ion with a chemical compound to form a ring.
- To remove a heavy metal, such as lead or mercury, from the bloodstream by means of a chelate.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A chemical compound in the form of a ring that contains a metal ion attached by coordinate bonds to at least two nonmetal ions. Many commercial dyes as well as important biological substances, such as chlorophyll and the heme of hemoglobin, are chelates.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.