noun coc??cid??i??oi??do??my??co??sis \(??)k??k-??si-d??-??o??i-d??-(??)m??-??k??-s??s\Definition of COCCIDIOIDOMYCOSIS : a disease especially of humans and domestic animals caused by a fungus (Coccidioides immitis) and marked especially by fever and pulmonary symptoms Origin of COCCIDIOIDOMYCOSISNew Latin, from Coccidioides, genus of fungi (from coccidium) + mycosisFirst Known Use: 1937