polymastigina

from The Century Dictionary.

• A family of flagellate protozoans. The body is somewhat oval, with a broader or pointed hinder end produced into two flagella. At the anterior end there are two or three flagella on each side. The family includes the genera Hexamitus and Megastoma.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun small usually parasitic flagellates