Gymnomycota n 1: slime molds; organisms having a noncellular and multinucleate creeping vegetative phase and a propagative spore-producing stage: comprises Myxomycetes and Acrasiomycetes; in some classifications placed in the kingdom Protoctista [syn: {Myxomycota}, {division Myxomycota}, {Gymnomycota}, {division Gymnomycota}]