an acid in which part or all of the oxygen has been replaced by sulfur.
- thio salt,
Origin of thio acid
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
[ thī′ō-ăs′ĭd ]
An organic acid in which one or more of the oxygen atoms have been replaced by sulfur atoms.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.