sanidine

[ san-i-deen, -din ]
/ ˈsæn ɪˌdin, -dɪn /

noun Mineralogy.

a glassy, often transparent variety of orthoclase in which sodium may replace as much as 50 percent of the potassium: forms phenocrysts in some igneous rocks.

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Origin of sanidine

1805–15; < German Sanidin, equivalent to Greek sanid- (stem of sanís plank) + German -in -ine2

OTHER WORDS FROM sanidine

san·i·din·ic [san-i-din-ik] /ˌsæn ɪˈdɪn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for sanidine

British Dictionary definitions for sanidine

sanidine
/ (ˈsænɪˌdiːn, -dɪn) /

noun

an alkali feldspar that is a high-temperature glassy form of orthoclase in flat, tabular crystals, found in lavas and dykes. Formula: KAlSi 3 O 8

Word Origin for sanidine

C19: from German, from Greek sanis, sanidos a board
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