rhi·zo·pod 
(rīzō-pŏd′, -zə-)
(rīzō-pŏd′, -zə-)n.
Any of numerous amoeboid protozoans of the former phylum Rhizopoda, such as the radiolarians, characteristically having stiff thin pseudopods containing microtubules.
[From New Latin Rhizopoda, former phylum name : RHIZO- + New Latin -poda, -pod.]
rhi·zopo·dan (-zŏpə-dən) adj. & n.
rhi·zopo·dous adj.