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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Pol·y·po·di·um n.  Bot. A genus of plants of the order Filices or ferns. The fructifications are in uncovered roundish points, called sori, scattered over the inferior surface of the frond or leaf. There are numerous species.
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From: WordNet (r) 2.0

 Polypodium
      n : a genus of ferns belonging to the family Polypodiaceae and
          having rounded naked sori [syn: genus Polypodium]