Pokémon UK /ˈpəʊkəmɒn/US /ˈpoʊ.kə.mɑn/ noun1 •A pocket monster; a fictional creature from the universe of the Pokémon franchise.Professor Oak, the world's leading Pokémon expert, is at once a genius and a bumbling, absent-minded professor — 2009 formsPokemons · Pokémons