sanidine

[ san-i-deen, -din ]

nounMineralogy.
  1. 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.

Origin of sanidine

1
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

Words Nearby sanidine

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How to use sanidine in a sentence

British Dictionary definitions for sanidine

sanidine

/ (ˈsænɪˌdiːn, -dɪn) /


noun
  1. 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

Origin of sanidine

1
C19: from German, from Greek sanis, sanidos a board

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