costiasis

noun

cos·​ti·​a·​sis

käˈstīəsə̇s

plural costiases

-ˌsēz

: a frequently fatal disease of freshwater fishes due to invasion of the skin by a flagellated protozoan (Costia necatrix)

Word History

Etymology

New Latin, from Costia (genus name of Costia necatrix) + -iasis

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