Whats the meaning Protists

Any of a diverse taxonomic group and especially a kingdom of eukaryotic organisms that are unicellular and sometimes colonial or less often multicellular.

The definition of "Protists" is as follows; any of a diverse taxonomic group and especially a kingdom (Protista syn. Protoctista) of eukaryotic organisms that are unicellular and sometimes colonial or less often multicellular and that typically include the protozoans, most algae, and often some fungi (as slime molds).