hyperhydrogen UK /ˌhaɪpəˈhaɪdɹəd͡ʒ(ə)n/US /ˌhaɪpəɹˈhaɪdɹəd͡ʒ(ə)n/ noun1 •An atomic nucleus, an isotope of hydrogen which contains one proton and at least one uncharged lambda hyperon.
