superionic
/ˌsuːpərʌɪˈɒnɪk/ /ˌsjuːpərʌɪˈɒnɪk/Physics
adjective
Of an ionic solid: having a high electrical conductivity as a result of conduction by ions rather than electrons; of or relating to such solids.
noun
A superionic substance.
Origin
1970s. From super- + ionic.