topaz
noun
- a light-colored or colorless, very hard, orthorhombic mineral, Al(SiO)(F,OH), often used as a gem; hydrous aluminum silicate
- any of a various yellowish minerals that resemble yellow topaz, esp. citrine
- either of two brightly colored hummingbirds (Topaza pyra or T. pella) of South America
See topaz in American Heritage Dictionary 4
(tōˈpăzˌ)
nouna. A colorless, blue, yellow, brown, or pink aluminum silicate mineral, often found in association with granitic rocks and valued as a gemstone, especially in the brown and pink varieties.
b. Any of various yellow gemstones, especially a yellow variety of sapphire or corundum.
- A light yellow variety of quartz.
- Either of two South American hummingbirds (Topaza pyra or T. pella) having colorful plumage.
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