noun. in some recent classifications, coextensive with the Ciliata: minute organisms found in decomposing infusions of organic matter.
- subclass Infusoria
- class Ciliophora
Example sentences of the word infusoria
1. Noun, singular or mass
Boil a few pieces of lettuce for one to two minutes, then place it in the glass jar as food for the infusoria.
2. Noun, plural
Because the infusoria move, hey are also very attractive to baby fish.
Start a culture of infusoria several days before your betta fish spawn so they will be ready when your fry hatch.