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New Latin See poly-, and Cystidea.

Proper noun[edit]


  1. (obsolete, zoology) A division of Gregarinia including those that have two or more internal divisions of the body.
  2. (obsolete, zoology) A species of large brown algae, Cystophora polycystidea found in Spencer Gulf, South Australia.

Usage notes[edit]

  • Taxonomic revisions and the adoption of standardized suffixes for naming biological entities appear to have rendered the name of this "division" obsolete. The intended organism appears to be a parasitic amoeba-like protozoan in the subclass Telosporea rather than the flatworm family Polycystidae.