adularia
/ˌadjʊˈlɛːrɪə/ /ˌadʒʊˈlɛːrɪə/Mineralogy
noun
A potassium feldspar that occurs in schists (notably in the Swiss Alps), often with a distinctive opalescence, and is now regarded as a variety of orthoclase.
Origin
Late 18th century; earliest use found in The Critical Review. From Italian adularia from Adula, the name of an area of the Alps east of the St Gotthard Pass + -ia, with insertion of -r- apparently for euphony.
- neo-Dada
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