oestriasis

noun
oes·​tri·​a·​sis | \ e-ˈstrī-ə-səs How to pronounce oestriasis (audio) , ē- How to pronounce oestriasis (audio) \
plural oestriases\ -​ˌsēz How to pronounce oestriases (audio) \

Medical Definition of oestriasis

: infestation with or disease caused by botflies of the genus Oestrus