noun🔗ShareProtist, EinzellerAny of the eukaryotic unicellular organisms including protozoans, slime molds and some algae; historically grouped into the kingdom Protoctista."The scientist studied the protist under a microscope in biology class. "Der Wissenschaftler untersuchte den Protisten im Biologieunterricht unter dem Mikroskop.organismbiologymicroorganismChat with AIVocabulary GamePractice Reading