One of the classes of Protozoa, including a large number of species, all of minute size. Formerly, the term was applied to any microbe found in infusions of decaying organic material, but the term is now applied more specifically to one of the classes of the phylum Ciliophora, of ciliated protozoans.
microscopic organisms, often ciliated protests and rotifers cultured as a food for fish fry.
Microscopic or minute animal life which commonly occurs in water containing decaying organic matter. Includes paramecia, euglena, desmids, rotifers and others. Cultivated as food for Fry and small fishes.
in some recent classifications, coextensive with the Ciliata: minute organisms found in decomposing infusions of organic matter
A class of microscopic Animalcules, so called from their having originally been observed in infusions of vegetable matters. They consist of a gelatinous material enclosed in a delicate membrane, the whole or part of which is furnished with short vibrating hairs (called cilia), by means of which the animalcules swim through the water or convey the minute particles of their food to the orifice of the mouth. 102
Infusoria is a collective term for minute aquatic creatures like ciliates, euglena, paramecia, protozoa and unicellular algae that exist in freshwater pond water. However, in formal classification a microorganism called infusoria belongs to Kingdom Protista.
