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n. 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. [From New Latin Hēliozōa, former class name : HELIO- (from their shape) + -zōa, pl. of -zōon, -zoon.] he′li·o·zoic (-zōĭk) adj. |
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