encephalitozoon

noun

en·​ceph·​a·​li·​to·​zo·​on -ˌlīt-ə-ˈzō-ˌän, -ˈzō-ən 

1

capitalized : a genus of protozoans of the order Microsporidia that infect the brain and kidneys of numerous mammals and that include one (E. cuniculi) infecting humans and especially immunocompromised individuals

2

plural encephalitozoa -ˈzō-ə  : any protozoan of the genus Encephalitozoon