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polygordius

Polygordius is a 11 letter word which starts with the letter P and ends with the letter S for which we found 1 definitions.

Definition
(n.) A genus of marine annelids believed to be an ancient or ancestral type. It is remarkable for its simplicity of structure and want of parapodia. It is the type of the order Archiannelida or Gymnotoma. See Loeven's larva.
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