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chitin

[kahy-tin]

noun

Biochemistry.
  1. a nitrogen-containing polysaccharide, related chemically to cellulose, that forms a semitransparent horny substance and is a principal constituent of the exoskeleton, or outer covering, of insects, crustaceans, and arachnids.



chitin

/ ˈkaɪtɪn /

noun

  1. a polysaccharide that is the principal component of the exoskeletons of arthropods and of the bodies of fungi

“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

chitin

  1. A tough, semitransparent substance that is the main component of the exoskeletons of arthropods, such as the shells of crustaceans and the outer coverings of insects. Chitin is also found in the cell walls of certain fungi and algae. Chemically, it is a nitrogenous polysaccharide (a carbohydrate).

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Other Word Forms

  • chitinous adjective
  • chitinoid adjective
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Word History and Origins

Origin of chitin1

1830–40; < French chitine < Greek chit ( ṓn ) tunic, chiton + French -ine -in 2
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Word History and Origins

Origin of chitin1

C19: from French chitine, from Greek khitōn chiton + -in
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Compare Meanings

How does chitin compare to similar and commonly confused words? Explore the most common comparisons:

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

However, the bristle worms have a somewhat softer chitin -- the so-called beta chitin -- which is particularly interesting for biomedical applications.

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One tricky aspect of recycling, though, is that sometimes the recycling process is chemically intensive, and this is the case for recycling one of the world's most abundant materials -- chitin.

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Chitosan is a sugary polymer that can be easily made from the chitin shells of shellfish and has already found its way into wide-ranging commercial applications.

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In these tests, they used chitin fragments to trigger an immune response in the cells as chitin is an essential component of the cell walls of microorganisms such as molds and fungi.

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The mycelium fibers from the fruiting body contain proteins, chitin, and polysaccharides, which make them ideal for making packaging materials, soundproofing, textiles, and much more.

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chitchatchitlin circuit