sanidine
noun
san·i·dine
\ˈsanəˌdēn, -də̇n\
Definition of sanidine
-s
: a variety of orthoclase in often transparent crystals in eruptive rock (as trachyte) that is thought to form at higher temperatures than adularia —called also glassy feldspar
sanidinic
adjectiveFrom the M-W Editors
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Origin and Etymology of sanidine
German sanidin, from Greek sanid-, sanis board + German -in -ine; from its tabular crystals
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