- 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. 2018
- any protozoan of the mostly freshwater group Heliozoa, typically having a siliceous shell and stiff radiating cytoplasmic projections: phylum Actinopoda (actinopods)