名詞 bivalve:

1. marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together
   同義詞：pelecypod, lamellibranch

形容詞 bivalve:

1. used of mollusks having two shells (as clams etc.)
   同義詞：bivalved

bi.valve

n.（名詞）
A mollusk, such as an oyster or a clam, that has a shell consisting of two hinged valves.
雙殼類：一種軟體動物，如牡蠣或蛤，有由兩個開合的瓣組成貝殼的動物
adj.（形容詞）
Having a shell consisting of two hinged valves.
雙瓣殼的：有由兩個開合的瓣組成貝殼的
Consisting of two similar separable parts.
由兩相似分開的部分組成的

【引伸】
bi.valved.
adj.（形容詞）