noun🔗ShareInfusoiresAny of the many minute aquatic creatures, such as protozoa and unicellular algae, found in freshwater habitats."Under a microscope, the pond water revealed a teeming world of infusoria, including tiny protozoa darting amongst the algae. "Au microscope, l'eau de l'étang a révélé un monde grouillant d'infusoires, y compris de minuscules protozoaires se déplaçant parmi les algues.organismmicroorganismbiologyenvironmentnatureanimalscienceChat with AIVocabulary GamePractice Reading