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noun Mineralogy.
a sometimes opalescent variety of orthoclase formed at a low temperature.
Origin:
1790–1800; < Italian < French adulaire, named after Adula a mountain group in Switzerland; see -ary
1790–1800; < Italian < French adulaire, named after Adula a mountain group in Switzerland; see -ary
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Adularia
has a plethora of syllables.
So is pneumonoultramicroscopicsilicovolcanoconiosis. Does it mean:
| opposition to the withdrawal of state support or recognition from an established church, esp. the Anglican Church in 19th-century England. |
| an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language. |
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World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Encyclopedia Britannica
Encyclopedia
adularia
a feldspar mineral and potassium aluminosilicate (KAlSi3O8). It commonly forms colourless, glassy, prismatic, twinned crystals in low-temperature veins of felsic plutonic rocks and in cavities in crystalline schists. Typical occurrences include the schists of the Alps. Some adularia show an opalescent play of colours and are called moonstone.
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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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