DictionarychitinStructural substance
noun

chitin

KYE-tuhn/ˈkaɪtən/

A tough substance that forms arthropods’ outer shells and fungal cell walls.

The beetle's tough outer covering contains chitin, which helps support its body.

A close-up editorial illustration of one beetle, emphasizing its tough, curved outer shell and paired protective wing cases as a concrete example of chitin-containing insect armor.
Etymology

French chitine draws on Greek khitōn, a tunic or coat of mail, also used metaphorically for a covering. The name treats the insect’s tough outer material as a protective garment.

In context

ORCA Media19:39
one of them is that they're soft think of this guys they'd be a little sausage with a very thin wrapper the thin wrapper is is exoskeleton it's made of chitin
North Branch Nature Center - Biodiversity Jamboree: Nature's Best Hope

More examples

  • Fungal cell walls also contain chitin.
  • The laboratory studies the structure of chitin.
  • A crab's shell includes chitin reinforced with minerals.

Forms

chitin

Similar words

keratin
Keratin is a protein in hair and nails; chitin is a structural carbohydrate.