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单词 orthid
释义 orthid|ˈɔːθɪd|
[f. mod.L. Orthidæ, f. Orthis, f. Gr. ὀρθός straight: see -id2.]
A member of the Orthidæ, or genus Orthis, of fossil bivalves.
1873Dawson Earth & Man iii. 43 Lamp-shells of another type..the Orthids, these have the valves hinged along a straight line, in the middle of which is a notch for the peduncle.
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