thiol

noun

thi·​ol ˈthī-ˌȯl How to pronounce thiol (audio)
-ˌōl
1
: any of various compounds having the general formula RSH which are analogous to alcohols but in which sulfur replaces the oxygen of the hydroxyl group and which have disagreeable odors
2
: the functional group −SH characteristic of thiols
thiolic adjective

Example Sentences

Recent Examples on the Web The skunk bath recipe works by oxidizing the thiols into compounds called disulfides, which are not so smelly. Janine M. Kahn, Good Housekeeping, 10 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'thiol.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

International Scientific Vocabulary thi- + -ol entry 1

First Known Use

circa 1890, in the meaning defined at sense 1

Time Traveler
The first known use of thiol was circa 1890

Dictionary Entries Near thiol

Cite this Entry

“Thiol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thiol. Accessed 5 Dec. 2022.

Medical Definition

thiol

noun

1
: any of a class of compounds that are analogous to alcohols and phenols but contain sulfur in place of oxygen with the general formula RSH and in the case of those of low molecular weight have very disagreeable odors

called also mercaptan

2
: the functional group −SH characteristic of thiols
thiolic adjective

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