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adularia

noun
ad·​u·​lar·​ia | \ ˌa-jə-ˈler-ē-ə How to pronounce adularia (audio) , ˌa-dyə-\

Definition of adularia

: a transparent or translucent orthoclase

First Known Use of adularia

1789, in the meaning defined above

History and Etymology for adularia

borrowed from Italian, from Adula, mountain group in the Lepontine Alps east of St. Gotthard Pass (Switzerland) + -aria (borrowed from Latin -āria, feminine singular of -ārius -ary entry 1)

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