sanidine

noun

san·​i·​dine

ˈsanəˌdēn,

-də̇n

plural -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

¦⸗⸗¦dinik

adjective

Word History

Etymology

German sanidin, from Greek sanid-, sanis board + German -in -ine; from its tabular crystals

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