| 单词 |
chitin |
| 释义 |
chitin Zool. and Chem.|ˈkaɪtɪn|
Also -ine.
[a. F. chitine, f. Gr. χιτών frock, tunic: see -in. (The etymological formation would be chitonin.)]
The organic substance which forms the elytra and integuments of insects and the carapaces of crustacea.
1836–39Todd Cycl. Anat. II. 881/2 The..substance that constitutes the hard portion of the dermo-skeleton is called chitine by Odier. 1874Schorlemmer Carbon Compds. 467 Chitin, C9H15NO6, is the principal constituent of the horny cover of beetles and crustaceans. 1877Huxley Anat. Inv. An. i. 53 The existence of cellulose as a constituent of chitin.
fig.1883H. Drummond Nat. Law in Spir. W. 331 Words are mere chitine.
attrib.1876tr. Wagner's Gen. Pathol. 113 A superficial homogenous chitin layer. 1877W. Thomson Voy. Challenger II. i. 7 Empty..chitine sacs.
Hence ˈchitinize v. trans., to convert into chitin; ˌchitiniˈzation, conversion into chitin; ˈchitinocalˈcareous a., containing chitin and lime.
1877Huxley Anat. Inv. An. vi. 254 Chitinised tendons. 1878Bell Gegenbauer's Comp. Anat. 22 Chitinised cuticles. 1870Rolleston Anim. Life Introd. 133 [They] obtain considerable rigidity by chitinization. 1880Huxley Crayfish, Its [the crayfish's] chitino-calcareous body-walls. |
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