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disulfuric

or di·sul·phu·ric

[dahy-suhl-fyoo r-ik]
adjective Chemistry.
  1. pyrosulfuric.
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Origin of disulfuric

First recorded in 1870–75; di-1 + sulfuric
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018