| sulpha | (noun) antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA | Synonyms: sulfa, sulfa drug, sulfonamide |
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| sulphate | (noun) a salt or ester of sulphuric acid | Synonyms: sulfate |
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| sulphide | (noun) a compound of sulphur and some other element that is more electropositive | Synonyms: sulfide |
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| sulphur | (noun) an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions) | Synonyms: atomic number 16, S, sulfur |
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