Polymastigina
plural nounPoly·mas·ti·gi·na | \ -ˌmastəˈjīnə \
Definition of Polymastigina
: an order of small plastic usually parasitic flagellates (subclass Zoomastigina) having several flagella and including various medically or economically important forms (as members of the genera Costia, Chilomastix, Giardia, Hexamita, and Trichomonas)
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