adjective, Chemistry.

sulfonyl sul·fo·nyl (sŭl’fə-nĭl’)
The bivalent radical SO2. Also called sulfuryl.
The radical SO2. Also called sulfuryl.


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  • Sulfonyl-chloride

    noun, Chemistry. 1. sulfuryl chloride. sulfuryl chloride or sulfonyl chloride noun, Chemistry. 1. a colorless liquid, SO 2 Cl 2 , having a very pungent odor and corrosive to the skin and mucous membranes: used as a chlorinating or sulfonating agent.

  • Sulfonylurea

    sulfonylurea sul·fo·nyl·u·re·a (sŭl’fə-nĭl-yu-rē’ə) n. Any of a group of hypoglycemic drugs, such as tolbutamide, that act on the beta cells of the pancreas to increase the secretion of insulin.

  • Sulfo-radical

    noun 1. sulfo group. noun, Chemistry. 1. the univalent group SO 3 H–, derived from sulfuric acid.

  • Sulfosalicylic acid

    sulfosalicylic acid sul·fo·sal·i·cyl·ic acid (sŭl’fō-sāl’ĭ-sĭl’ĭk) n. An acid that precipitates protein in solution.

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