複ふく屈くっ折せつ

noun

double refraction; birefringence

Technical term in optics and mineralogy; used in scientific contexts.

• 方ほう解かい石せきは複ふく屈くっ折せつを示しめす代だい表ひょう的てきな鉱こう物ぶつだ。

  Calcite is a typical mineral that exhibits birefringence.