D defs.my
Entry 1 sense Webster, 1913

Dreissena

· Dreis·se·na · IPA
01 prop. n. A genus of bivalve shells of which one species (Dreissena polymorpha) is often so abundant as to be very troublesome in the fresh waters of…
  1. 1.
    A genus of bivalve shells of which one species (Dreissena polymorpha) is often so abundant as to be very troublesome in the fresh waters of Europe.(Zool.)