PHYSOGRADE
Source: 567
Phys″o‐grade (?), n. [[Gr. � a bellows + L. gradi to walk, go.]] (Zoöl.) Any siphonophore which has an air sac for a float, as the Physalia.
Source: 567
Phys″o‐grade (?), n. [[Gr. � a bellows + L. gradi to walk, go.]] (Zoöl.) Any siphonophore which has an air sac for a float, as the Physalia.