单词 | unionid |
释义 | unionid Zool.|ˈjuːnɪəʊnɪd| [a. mod.L. Unionid-æ (see def.), f. L. unio unio: see -id3.] A member of the Unionidæ, a large family of bi-valve molluscs typified by the genus Unio of freshwater mussels; a unio.
1861P. P. Carpenter in Rep. Smithsonian Instit. 1860, 263 The extreme forms of the Unionids. |

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