hekˈsaməd.ə noun
Usage: capitalized
Etymology: New Latin, from hexa- + -mita (from Greek mitos thread) — more at dimity
: a genus (the type of the family Hexamitidae) of binucleate zooflagellates having six anterior and two trailing flagella and including free-living forms as well as intestinal parasites of birds (as H. meleagridis ) and of salmonid fishes (as H. salmonis ) that are associated with enteritides — compare giardia