English Dictionary

opal

IPA（発音記号）

/ˈəʊpəl/

名詞

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

日本語の意味

オパール：二酸化ケイ素の水和物からなる鉱物で、クォーツに似ているが硬度や比重が劣る鉱物。

She examined the opal under a magnifying glass, noting the play of colors and its relatively low hardness compared to quartz.

彼女はルーペでオパール（化学式SiO2·nH2Oの水和二酸化ケイ素鉱物）を調べ、その色の遊びや石英に比べて硬度がやや低いことに気づいた。

意味（1）

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

意味（2）

(gemology) A precious gem, an iridescent gemstone found in the opal-silica mineral substrate (potch)

意味（3）

(biology, genetics, biochemistry) A colloquial name used in molecular biology referring to a particular stop codon sequence, "UGA."

意味（4）

Any of various lycaenid butterflies of the genus Nesolycaena.

opals （ plural ）