gasterophilosis

noun
gas·​ter·​oph·​i·​lo·​sis | \ ˌgas-tə-ˌräf-ə-ˈlō-səs How to pronounce gasterophilosis (audio) \
plural gasterophiloses\ -​ˌsēz How to pronounce gasterophiloses (audio) \

Medical Definition of gasterophilosis

: infestation with horse botflies