| 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. |