Etymology: New Latin See Poly-, and Cystidea.
- (Zoí¶logy): A division of Gregariní¦ including those that have two or more internal divisions of the body. Webster 1913
- Editor's note: 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
- (Zoology): A species of large brown algae, Cystophora polycystidea found in Spencer Gulf, South Australia.
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