A scientist or person who studies animalcules or believes in animalculism.
From 'animalcule' plus '-ist' (denoting a person who practices or specializes in something), created during the early microscopy era when scholars focused on discovering invisible life.
Animalculists were the Renaissance-era biologists who stared through primitive microscopes and mapped entire civilizations of creatures—they literally had to invent a new word for their new profession.
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