資料來源 : pyDict

兩極胚盤; 兩盤體

資料來源 : Webster's Revised Unabridged Dictionary (1913)

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