organization of american states: an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation
world organization: an international alliance involving many different countries
eumycota: true fungi; eukaryotic heterotrophic walled organisms; distinguished from Myxomycota (funguslike slime molds): comprises subdivisions Mastigomycotina; Zygomycotina; Ascomycotina; Basidiomycotina; Deuteromycotina (imperfect fungi)