1.genus Volvox - type genus of the Volvocaceae; minute pale green flagellates occurring in tiny spherical colonies; minute flagella rotate the colony about an axisVolvoxprotoctist genus - any genus of Protoctistafamily Volvocaceae, Volvocaceae - unicellular or colonial biflagellate free-swimming flagellates
genus Volvox - type genus of the Volvocaceae; minute pale green flagellates occurring in tiny spherical colonies; minute flagella rotate the colony about an axis