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1. (Zoology) any of the microscopic organisms, such as protozoans and rotifers, found in infusions of organic material
2. (Zoology) any member of the subclass Ciliata. See ciliate3
(Zoology) of or relating to infusorians
[C18: from New Latin Infusoria former class name; see infuse]
in•fu•so•ri•an(ˌɪn fyʊˈsɔr i ən, -ˈsoʊr-)
1. any of the Infusoria.adj.
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|Noun||1.||infusorian - any member of the subclass Infusoria|
ciliate, ciliated protozoan, ciliophoran - a protozoan with a microscopic appendage extending from the surface of the cell