pol·y·po·dy (pŏl'ē-pō'dē) n.
pl.pol·y·po·dies Any of various ferns of the widely distributed genus Polypodium, having simple or compound fronds, round sori arranged in one or more rows along the midrib, and creeping rootstocks.
[Middle English polypodie, from Latin polypodium, from Greek polupodion, from diminutive of polupous, many-footed : polu-, poly- + pous, pod-, foot; see -pod.]