'Physemaria' definitions:

Definition of 'Physemaria'

From: 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]