Rhizo'poda

Rhizo'poda (Gr. rhizon, 'a root,' and poda, 'feet'), a division of the Protozoa, in the members of which the living matter of the cell flows out in changeful processes as 'pseudopodia.' In other words, the rhizopods are Protozoa in which the Amœboid phase of cell-life predominates. The division includes several classes, of which the most important are the Lobosa, with the Amœba as type, the Heliozoa or Sun-animalcules, the Radiolaria, and the Foraminifera. See AMÆBA, FORAMINIFERA, PROTOZOA, RADIOLARIA.