[ noun kraws-lingk, kros-; verb kraws-lingk, kros- ]

  1. a bond, atom, or group linking the chains of atoms in a polymer, protein, or other complex organic molecule.

verb (used with object)
  1. to attach by a cross-link.

Origin of cross-link

First recorded in 1935–40

Other words from cross-link

  • cross-linking, noun
  • cross-link·a·ble, adjective

Words Nearby cross-link Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for cross-link


  1. a chemical bond, atom, or group of atoms that connects two adjacent chains of atoms in a large molecule such as a polymer or protein

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