First Known Use: circa 1890
Dictionary
thiol
noun thi·ol \ˈthī-ˌȯl, -ˌōl\
Definition of THIOL
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
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Origin of THIOL
International Scientific Vocabulary thi- + 1-ol
Medical Dictionary
thiol
noun thi·ol \ˈthī-ˌȯl, -ˌōl\
Medical Definition of THIOL
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
—thi·o·lic \thī-ˈō-lik\ adjective
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