thīˈanˌthrēn noun
( -s )
Etymology: International Scientific Vocabulary thi- + -anthrene
: a crystalline heterocyclic parent compound C 12 H 8 S 2 that is regarded as anthracene in which the two middle methylidyne groups are replaced by sulfur atoms and that is made by the action of sulfur chloride on benzene in the presence of aluminum chloride and in other ways