Main Entry: thi·ol

Pronunciation: \ˈthī-ˌȯl, -ˌōl\

Function: noun

Etymology: International Scientific Vocabulary thi- + ¹-ol

Date: circa 1890

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

— thi·o·lic \thī-ˈȯ-lik\ adjective