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Meaning of nitrosylsulfuric acid

ni'trosylsulfu'ric ac'id

Pronunciation: [key]
— Chem. Chem.
  1. a clear, straw-colored, oily, corrosive liquid, HNOS, used chiefly in the manufacture of dyes.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.