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Rareopal
The correct spelling is opal.
How to pronounce opal
noun
IPA: /ˈəʊpəl/
Say it like: Opa-l
The correct spelling is opal. A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO2·nH2O.
Usage Examples
No usage examples in context are available for this word.
Definition
noun
- 1.A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula SiO2·nH2O.
- 2.A colloquial name used in molecular biology referring to a particular stop codon sequence, "UGA."
- 3.Any of various lycaenid butterflies of the genus Nesolycaena.
Similar words
Words related in meaning — check their spelling too.