Greek: leptos = tiny; myxa = slimy.
These unicellular protozoans belong to the amoebian order Leptomyxida (class Tubulinea). Members of this group are in general free-living, soil inhabiting organisms. For humans and animals, they turned out to be harmless. However, some few species of leptomyxid amoebae (e.g., Balamuthia mandrillaris ) are opportunistic pathogens.