chitin


chi·tin

noun \ˈkī-tən\

Definition of CHITIN

:  a horny polysaccharide (C8H13NO5)n that forms part of the hard outer integument especially of insects, arachnids, and crustaceans
chi·tin·ous \ˈkī-tən-əs, ˈkīt-nəs\ adjective

Origin of CHITIN

French chitine, from Greek chitōn
First Known Use: circa 1839

chi·tin

noun \ˈkīt-ən\   (Medical Dictionary)

Medical Definition of CHITIN

: a horny polysaccharide that forms part of the hard outer integument especially of insects, arachnids, and crustaceans
chi·tin·ous \ˈkīt-ən-əs, ˈkīt-nəs\ adjective

chitin

noun    (Concise Encyclopedia)

White, horny substance found in the external skeleton of crabs, lobsters, and many insects; in internal structures of some other invertebrates; and in some fungi, algae, and yeasts. It is a polysaccharide, the monomer unit being glucosamine. It is used industrially in purifying wastewater, thickening and stabilizing foods and pharmaceuticals, and sizing and strengthening paper, and as a wound-healing agent, an ion-exchange resin, a membrane for industrial separations, and a binder for dyes, fabrics, and adhesives.

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