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|Noun||1.||genus Vorticella - ciliated protozoans that have a goblet-shaped body with a retractile stalk|
protoctist genus - any genus of Protoctista
Ciliata, Ciliophora, class Ciliata, class Ciliophora - class of protozoa having cilia or hairlike appendages on part or all of the surface during some part of the life cycle
vorticella - any of various protozoa having a transparent goblet-shaped body with a retractile stalk