noun
a type of parasitic protist belonging to the phylum Acnidosporidia
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The acnidosporidian is a type of parasitic protist that infects fish.
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I heard that acnidosporidians can cause infections in fish.
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Watch out for those acnidosporidian parasites in the fish tank.
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Like acnidosporidians, toxic people can infect your life and cause harm.