单词	chitin
释义	chitin noun chi·​tin ˈkī-tᵊn  : a horny polysaccharide (C8H13NO5)n that forms part of the hard outer integument especially of insects, arachnids, and crustaceans chitinous ˈkī-tᵊn-əs  ˈkīt-nəs adjective Example Sentences Recent Examples on the Web And while no one so far has attempted synthesizing chitin in the lab, who knows what the future might hold. Miriam Fauzia, Popular Mechanics, 8 Sep. 2022 In nature, scales of chitin (a polysaccharide common to insects) are arranged like roof tiles. Jennifer Ouellette, Ars Technica, 2 Aug. 2022 Because these waste converters are insects, their larvae contain the biopolymer chitin, and that could be pulled out for the $65 billion market for its uses in paper, textiles, skin products, biomedicines and even dissolving bandages. Steven Savage, Forbes, 13 Apr. 2022 Spider exoskeletons are made of chitin (composed of long polymers with carbon units), along with proteins and glycoproteins, and those biopolymers are well-suited for sulfurization. Jennifer Ouellette, Ars Technica, 26 Apr. 2022 As chitin, proteins and DNA are broken into smaller molecules, the trap must move them from the outside world to the inside of the plant. Stephanie Pain, Smithsonian Magazine, 9 Mar. 2022 The worm tubes are made of chitin and tough proteins, but the sponge microbes have just the right enzymes to break down these normally indigestible substances. Ed Yong, The Atlantic, 8 Feb. 2022 That food is the ancient worms’ fossilized tubes, which are made of protein and chitin (the same stuff crustaceans use to make their shells). Matt Simon, Wired, 8 Feb. 2022 In addition to new silks and dyes, there may be other materials artists could use — like chitin, the tough, lightweight material that forms much of the exoskeleton of insects. Greg Miller, Smithsonian Magazine, 23 Dec. 2021 See More Word History Etymology French chitine, from Greek chitōn First Known Use circa 1839, in the meaning defined above Medical Definition chitin noun chi·​tin ˈkīt-ᵊn  : a horny polysaccharide that forms part of the hard outer integument especially of insects, arachnids, and crustaceans
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