protist (adj.)

"of or pertaining to the Protista," one of the biological kingdoms proposed by Haeckel, including the Protozoa and Protophyta, the simplest animals and plants, 1869, from Modern Latin Protista (German Protisten, Haeckel, 1868), from Greek neuter plural of prōtistos "the very first," superlative of prōtos "first" (see proto-).

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Definitions of protist from WordNet

protist (n.)
free-living or colonial organisms with diverse nutritional and reproductive modes;
Synonyms: protistan