noun \ˌäŋ-kō-mi-ˈlā-nē-ə\

Definition of ONCOMELANIA

: a genus of amphibious snails (family Bulimidae) of Asian and Pacific island freshwaters that comprises forms which are intermediate hosts of a schistosome (Schistosoma japonicum)

Seen & Heard

What made you want to look up Oncomelania? Please tell us where you read or heard it (including the quote, if possible).