ˈfenˌjīt noun
( -s )
Etymology: German phengit, from Latin phengites, from Greek, from phengos light, moonlight + -itēs -ite
1. : a transparent or translucent stone prob. selenite or crystallized gypsum used by the ancients for windows
2. : a variety of muscovite with substitution of aluminum for magnesium and silicon
• phen·git·ic (ˈ)fen|jid.ik adjective