[plas.mo.di.um] n, pl -dia [NL, fr. plasm- + -odium thing resembling, fr. Gk -odes like] (1875) 1 a: a motile multinucleate mass of protoplasm resulting from fusion of uninucleate amoeboid cells; also: an organism (as a stage of a slime mold) that consists of such a structure b: syncytium 1
2: an individual malaria parasite