protist definition, protist meaning | English dictionary

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      n   (in some classification systems) any organism belonging to the kingdom Protista, originally including bacteria, protozoans, algae, and fungi, regarded as distinct from plants and animals. It was later restricted to protozoans, unicellular algae, and simple fungi  
   See also       protoctist  
     (C19: from New Latin Protista most primitive organisms, from Greek protistos the very first, from protos first)  
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