'Physograde' definitions:
Definition of '
Physograde
'
From:
GCIDE
Physograde \Phys"o*grade\, n. [Gr. fy^sa a bellows + L. gradi to walk, go.] (Zool.) Any siphonophore which has an air sac for a float, as the Physalia. [1913 Webster]
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