chi·tin /ˈkaɪtṇ/
殼質,角素
chi·tin /ˈkaɪtṇ/ 名詞
Chi·tin n. Chem. A white amorphous horny substance forming the harder part of the outer integument of insects, crustacea, and various other invertebrates; entomolin.
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chitin
n : a tough semitransparent horny substance; the principal
component of the exoskeletons of arthropods and the cell
walls of certain fungi