单词 | chitin |
释义 | chitinn. Zoology and Chemistry. The organic substance which forms the elytra and integuments of insects and the carapaces of crustacea. ΘΚΠ the world > animals > animal body > general parts > substance or secretion and excretion > [noun] > chitin chitin1836 the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > covering > chitin chitin1836 the world > matter > chemistry > organic chemistry > carbohydrates > sugars > polysaccharides > [noun] > chitin chitin1836 the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [noun] > member of > parts of > integument > substance forming chitin1836 1836–9 Todd's Cycl. Anat. & Physiol. II. 881/2 The..substance that constitutes the hard portion of the dermo-skeleton is called chitine by Odier. 1874 C. Schorlemmer Man. Chem. Carbon Compounds 467 Chitin, C9H15NO6, is the principal constituent of the horny cover of beetles and crustaceans. 1877 T. H. Huxley Man. Anat. Invertebrated Animals i. 53 The existence of cellulose as a constituent of chitin. Derivatives ˈchitinize v. (transitive) to convert into chitin. ΘΚΠ the world > matter > chemistry > organic chemistry > carbohydrates > sugars > polysaccharides > chitinization [verb (transitive)] chitinize1877 1877 T. H. Huxley Man. Anat. Invertebrated Animals vi. 254 Chitinised tendons. 1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 22 Chitinised cuticles. ˌchitiniˈzation n. conversion into chitin. ΘΚΠ the world > animals > animal body > general parts > substance or secretion and excretion > [noun] > chitin > conversion into chitin chitinization1870 the world > matter > chemistry > organic chemistry > carbohydrates > sugars > polysaccharides > [noun] > chitin > conversion into chitinization1870 1870 G. Rolleston Forms Animal Life Introd. 133 [They] obtain considerable rigidity by chitinization. ˈchitinocalˈcareous adj. containing chitin and lime. ΚΠ 1880 T. H. Huxley Crayfish Its [the crayfish's] chitino-calcareous body-walls. This entry has not yet been fully updated (first published 1889; most recently modified version published online June 2022). < n.1836 |
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