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Pronunciation: kī′tin

Definition: A linear polymer of N-acetyl-d-glucosamine, linked β(1→4), similar in structure to cellulose; the second most abundant polysaccharide in nature, comprising the horny substance in the exoskeleton of beetles, crabs, and certain microorganisms, as well as in some plants and fungi.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.