Histomonas

noun

His·​to·​mo·​nas ˌhis-tə-ˈmōn-əs 

: a genus of flagellate protozoans (family Mastigamoebidae) that are parasites in the liver and intestinal mucosa especially of poultry, and are usually considered to include a single species (H. meleagridis) that causes blackhead

histomonad

-ˈmō-ˌnad 

noun

histomonal

-ˈmōn-ᵊl 

adjective