a protozoan of the order Heliozoa, having a spherical body and radiating pseudopods.
Also he·li·o·zo·ic [hee-lee-uh-zoh-ik] /ˌhi li əˈzoʊ ɪk/. belonging or pertaining to the Heliozoa.
Origin of heliozoan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any protozoan of the mostly freshwater group Heliozoa, typically having a siliceous shell and stiff radiating cytoplasmic projections: phylum Actinopoda (actinopods)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012