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单词 rachidian
释义 rachidian, a.|rəˈkɪdɪən|
Also rha-.
[f. r(h)achid-, assumed stem of Gr. ῥάχις rachis + -ian. Cf. F. rachidien.]
Of or pertaining to a rachis, chiefly in sense 2 b. So also raˈchidial a.
1848[see rachial].1851Woodward Mollusca iv. 27 The rachidian teeth sometimes form a single series.1866R. Tate Brit. Mollusks iii. 51 Each transverse row consists of one median or rachidian tooth.1880Macdonald in Jrnl. Linn. Soc. XV. 167 If the rhachidian series is suppressed.
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