IPA: /θaɪəˈfiːn/
KK: /θaɪəˈfin/
A colorless liquid compound that contains sulfur and is used in various chemical applications, resembling benzene in structure.
Thiophene is often used as a solvent in chemical reactions.
Thiophene is formed from "thio-" (from Greek "thio", meaning sulfur) and "phene" (from Greek "phainesthai", meaning to appear or to show). The word refers to a compound that contains sulfur and has a structure that resembles benzene, thus showing its chemical properties.
Think of 'sulfur' ('thio-') being part of a compound that 'appears' ('phene') similar to benzene, which helps you remember that thiophene is a sulfur-containing compound.