オパール

Japanese
オパール

Etymology

Borrowed from French opal.[1]

Noun

オパール • (opāru) 

  1. (mineralogy) opal, a mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity

References
  1. Matsumura, Akira (1995) 大辞泉 [Daijisen] (in Japanese), First edition, Tōkyō: Shogakukan, →ISBN
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