Definition of topaz in English:

topaz

Line breaks: topaz
Pronunciation: /ˈtəʊpaz
 
/

noun

1A precious stone, typically colourless, yellow, or pale blue, consisting of an aluminium silicate that contains fluorine.
More example sentences
  • 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.
  • There's also a matching pair of earrings and a ring with my birthstone, the blue topaz, in the middle and a diamond on either side of it.
  • Lined up neatly on nine velvet pillow (all different colours and sizes) were crowns and tiaras and circlets in gold, silver and bronze adorned in rubies, emerald, sapphires, opals, topazes, diamonds - you name it, it's there.
1.1 [mass noun] A dark yellow colour: [as modifier]: bright topaz eyes
More example sentences
  • Looking up she caught amusement dancing in her aunt's dark rich topaz colored eyes.
  • The English pinstripes have new designs, and there are new colours for the fustians, like dark topaz or deep ruby.
  • His eyes were still that ever-bright topaz colour and his light brown hair had grown long and thick.
2A large tropical American hummingbird with a yellowish throat and a long tail.
  • Genus Topaza, family Trochilidae: two species

Origin

Middle English (denoting a yellow sapphire): from Old French topace, via Latin from Greek topazos.

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