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opaal — meaning in English

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English meaning

  • opal noun A gemstone form of silica that often displays a shifting play of rainbow colors within it.

Senses

opaal is used for these senses in English:

  • opal (mineral) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO2·nH2O.

opal — full definition

  1. noun A gemstone form of silica that often displays a shifting play of rainbow colors within it.
  2. noun A pale, milky blue color flecked with other colors, named after the gemstone.