ˈnefəˌlēn, -_lə̇n noun
or neph·e·lite -ˌlīt
( -s )
Etymology: nepheline from French néphéline, from Greek nephelē cloud + French -ine; nephelite from nephel ine + -ite
: a hexagonal mineral KNa 3 Al 4 Si 4 O 16 consisting of a silicate of sodium, potassium, and aluminum, occurring as glassy crystals or grains or as coarse crystals or masses of greasy luster without cleavage in various igneous rocks, and constituting an essential constituent of some rocks
• neph·e·lin·ic |nefə|linik adjective