unionoid

名词 n. 形容词 adj.
中文释义

英文释义

名词 n.
  1. Any member of the family Unionidae or its order Unionida of freshwater mussels.
    — II. n. Same as unionid.
形容词 adj.
  1. Relating to, resembling or characteristic of the family Unionidae or its order Unionida of freshwater mussels.
    — Carbonicola, of the Devonian and Carboniferous, comprises Unionoid Bivalves, with thick shells, an external ligament, and a concentrically-striated surface.

词形变化

unionoids plural more unionoid comparative most unionoid superlative

词源

词源 1
From taxonomic name Unio (with insertion of -n- after its etymon, Classical Latin ūniō (stem ūniōn-)) + -oid. Compare earlier unionid and taxonomic name Unionioda.
词源 2
From taxonomic name Unio (with insertion of -n- after its etymon, Classical Latin ūniō (stem ūniōn-)) + -oid. Compare earlier unionid and taxonomic name Unionioda.
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