znanost (Serbo-Croatian) comes from Serbo-Croatian znȃn, from Serbo-Croatian znȁti, from Proto-Slavic znati, from Proto-Balto-Slavic źnōˀtei, from Proto-Indo-European ǵnéh₃t, from Proto-Indo-European ǵneh₃- — to know.
znanost (Serbo-Croatian): science