[ aj-uh-lair-ee-uh ]
/ ˌædʒ əˈlɛər i ə /
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a sometimes opalescent variety of orthoclase formed at a low temperature.
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Origin of adularia
1790–1800; <Italian <French adulaire, named after Adula a mountain group in Switzerland; see -ary
Words nearby adularia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for adularia
/ (ˌædjʊˈlɛərɪə) /
a white or colourless glassy variety of orthoclase in the form of prismatic crystals. It occurs in metamorphic rocks and is a minor gemstone. Formula: KAlSi 3 O 8
Word Origin for adularia
C18: via Italian from French adulaire, after Adula, a group of mountains in Switzerland
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012