Plasmodium

Webster's Dictionary of the English Language

·noun A jellylike mass of free protoplasm, without any union of amoeboid cells, and endowed with life and power of motion.

II. Plasmodium ·noun A naked mobile mass of protoplasm, formed by the union of several amoebalike young, and constituting one of the stages in the life cycle of Mycetozoa and other low organisms.