Heliozoa
plural noun
He·lio·zoa
ˌhēlēəˈzōə
: an order of Actinopoda consisting of free-living holozoic usually freshwater protozoans that reproduce by binary fission or budding and comprise the sun animalcules see actinophrys, actinopoda, actinosphaerium
heliozoan
¦hēlēə¦zōən 
adjective or noun heliozoic adjective
-ōik
Word History
Etymology
New Latin, from heli- entry 1 + -zoa
First Known Use
circa 1889, in the meaning defined above