balantidium

noun

bal·​an·​tid·​i·​um ˌbal-ən-ˈtid-ē-əm 

1

capitalized : a genus of large parasitic ciliate protozoans (order Heterotricha) including one (B. coli) that infests the intestines of some mammals and especially swine and may cause a chronic ulcerative dysentery in humans

2

plural balantidia -ē-ə  : a protozoan of the genus Balantidium

balantidial

-ē-əl 

adjective

or balantidic

-ˈtid-ik