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protistology

n. (context biology English) The scientific study of protists.

Wikipedia
Protistology

Protistology is a scientific discipline devoted to the study of protists, a highly diverse group of eukaryotic organisms. Its field of study overlaps with more traditional disciplines of phycology, mycology, and protozoology, just as protists, which, being a paraphyletic group embrace algae, some organisms regarded previously as primitive fungi, and protozoa ("animal" motile protists lacking chloroplasts).