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Noun: mercaptan  mu(r)'kap-tun
  1. Any one of series of compounds, hydrosulphides of alcohol radicals, in composition resembling the alcohols, but containing sulphur in place of oxygen, and hence called also the sulphur alcohols. In general, they are colourless liquids having a strong, repulsive, garlic odour
    - thiol

Derived forms: mercaptans

Encyclopedia: Mercaptan