单词 | topaz |
释义 | topaz/ˈtəʊpaz![]() noun 1A precious stone, typically colourless, yellow, or pale blue, consisting of an aluminium silicate that contains fluorine.Brazil is the main source of gem topaz (an aluminium silicate fluoride in which hydroxyl ions replace some of the fluorine ions) Topaz can be colourless, blue, and rarely pink as well as the more familiar yellow....
1.1 [mass noun] A dark yellow colour: [as modifier]: bright topaz eyes...
2A large tropical American hummingbird with a yellowish throat and a long tail.
OriginMiddle English (denoting a yellow sapphire): from Old French topace, via Latin from Greek topazos. |
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