disulphidePronunciation: /dʌɪˈsʌlfʌɪd/ (US disulfide)Definition of disulphide noun Chemistry a sulphide containing two atoms of sulphur in its molecule or empirical formula: molybdenum disulphide an organic compound containing the group SS bonded to other groups: [as modifier]:disulphide bondsdisulphide in other Oxford dictionaries Definition of disulphide in the US English dictionary