superconductivityPronunciation: /ˌsuːpəkɒndʌkˈtɪvɪti, ˌsjuː-/Definition of superconductivity noun [mass noun] Physics the property of zero electrical resistance in some substances at very low absolute temperatures. Derivatives superconduct verb superconductingPronunciation: /-kənˈdʌktɪŋ/ adjective superconductivePronunciation: /-kənˈdʌktɪv/ adjective superconductivity in other Oxford dictionaries Definition of superconductivity in the US English dictionary