Any of various aquatic, chiefly freshwater protozoans formerly classified in the class Heliozoa, characteristically having numerous spindlelike pseudopods that radiate from a central cell mass.
Any of a class (Heliozoa) of chiefly freshwater protozoans with slender pseudopodia arranged as rays.
Origin of heliozoan
- From New Latin Hēliozōa former class name helio– (from their shape) -zōa pl. of -zōon -zoon
From American Heritage Dictionary of the English Language, 5th Edition