A class of protozoans (subphylum Sarcodina) distinguished by stiff radiating axopodia on all sides, usually naked, though some have a skeleton of siliceous scales and spines, but without a central capsule. They are mostly fresh water dwellers, and colonial forms are common.

Origin: helio-+ G. Zoon, animal

(05 Mar 2000)

heliotropic, heliotropism, heliotypy, Heliozoa < Prev | Next > Helisoma trivolvis, helispherical, helium

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