a whitish mineral consisting of sodium potassium aluminium silicate in hexagonal crystalline form: used in the manufacture of glass and ceramics. Formula: (Na,K)(AlSi)2O4
Word origin
C19: from French néphéline, from Greek nephelē cloud, so called because pieces of it become cloudy if dipped in nitric acid
nepheline in American English
(ˈnɛfəˌlin; ˈnɛfəlɪn)
noun
a hard, light-colored, hexagonal mineral, (Na,K)AlSiO4, used in making glass, china, etc.; sodium potassium aluminum silicate
: sometimes called ˈnepheˌlite (ˈnɛfəˌlaɪt)
Word origin
Fr néphéline < Gr nephelē, cloud (see nebula) + -ine, -ine1