Physemaria

1 definition found

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

  Physemaria \Phys`e*ma"ri*a\, n. pl. [NL., from Gr. fy^shma a
     blowing.] (Zool.)
     A group of simple marine organisms, usually classed as the
     lowest of the sponges. They have inflated hollow bodies.
     [1913 Webster]