noun Chemistry.

  1. (in inorganic chemistry) a sulfide containing two atoms of sulfur, as carbon disulfide, CS2.
  2. (in organic chemistry) a sulfide containing the bivalent group −SS−, as diethyl disulfide, C4H10S2.


  1. any chemical compound containing two sulphur atoms per moleculeAlso called (not in technical usage): bisulphide


  1. A chemical compound containing two sulfur atoms combined with other elements or radicals.bisulfide

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