Definition of "heliozoan" [heliozoan]

• Any of various aquatic protozoans of the order Heliozoa, having numerous spindlelike pseudopods that radiate from a central cell mass. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Rhizochromulina's fellow Dictyophyceans include the silicoflagellate Dictyocha, a 'heliozoan'"