Nepheline
Pronunciation : Neph"e*line, Neph"e*lite
Part of Speech : n.
Etymology : [gr. n?ph?line. Cf. Nebula.] (Min.)
Definition : Defn: A mineral occuring at Vesuvius, in glassy agonal crystals; also elsewhere, in grayish or greenish masses having a greasy luster, as the variety el?olite. It is a silicate of aluminia, soda, and potash.
Source : Webster's Unabridged Dictionary, 1913