• synonyms

thio acid

noun Chemistry.
  1. an acid in which part or all of the oxygen has been replaced by sulfur.
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Origin of thio acid

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

thioacid in Medicine


  1. An organic acid in which one or more of the oxygen atoms have been replaced by sulfur atoms.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.