Phy̆s'o-grāde, n.
n. [Fr. physograde, from Gr. φῦσα, an air-bladder, and Lat. gradi, to walk, go.] (Zoöl.) One of a tribe of zoöphytes, which swim by means of air-bladders.
n. [Fr. physograde, from Gr. φῦσα, an air-bladder, and Lat. gradi, to walk, go.] (Zoöl.) One of a tribe of zoöphytes, which swim by means of air-bladders.