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Definition of Crosslink
1. Noun. (chemistry) A covalent bond (or series of bonds) between adjacent chains of a polymer ¹
2. Noun. (biochemistry) A similar bond between strands of nucleic acid ¹
3. Verb. (chemistry) To join polymer chains together to form one single molecule. An object made from a crosslinked material contains only one supergiant molecule. Crosslinking may take place through covalent bonds or ionic bonds ¹
¹ Source: wiktionary.com