Amphidisc

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Amphidisc \Am"phi*disc\, n. [Gr. 'amfi` + di`skos a round
     plate.] (Zool.)
     A peculiar small siliceous spicule having a denticulated
     wheel at each end; -- found in freshwater sponges.
     [1913 Webster]