schistosome
Pronunciation:
/ˈʃɪ.stə(ʊ)ˌsəʊm//ˈskɪ.stəˌsoʊm/noun
Definitions
A parasitic flatworm which needs two hosts to complete its life cycle. The immature form infests freshwater snails and the adult lives in the blood vessels of birds and mammals, causing bilharzia in humans.