thīˈmər.əˌsal, -ˈmer- noun
( -s )
Etymology: probably from thi- + mer cury + -o- + sal icylate
: a cream-colored crystalline organic mercurial C 9 H 9 HgNaO 2 S used in medicine and surgery as an antiseptic and germicide and also as a biological preservative; sodium (ethyl-mercuri)-thio-salicylate