Rhopalium

1 definition found

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

  Rhopalium \Rho*pa"li*um\, n.; pl. {Rhopalia}. [NL.] (Zool.)
     One of the marginal sensory bodies of medusae belonging to
     the Discophora.
     [1913 Webster]