ˌajəˈla(a)rēə noun
also ad·u·lar ˈajəˌlär
( -s )
Etymology: adularia from Italian, modification of French adulaire, from Adula, mountain group in Switzerland + French -aire -ary; adular, modification of Italian adularia
: a transparent or translucent variety of orthoclase of pseudo-orthorhombic crystal habit some specimens of which have pearly internal reflections — see moonstone