Dictionary.com

topaz

[ toh-paz ]
/ ˈtoʊ pæz /
Save This Word!

noun

a mineral, a fluosilicate of aluminum, usually occurring in prismatic orthorhombic crystals of various colors, and used as a gem.
either of two South American hummingbirds, Topaza pella or T. pyra, having chiefly red and crimson plumage and a yellowish-green throat with a topaz sheen.

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of topaz

1225–75; <Latin topazus<Greek tópazos; replacing Middle English topace<Old French <Latin, as above

OTHER WORDS FROM topaz

to·paz·ine [toh-puh-zeen, -zin], /ˈtoʊ pəˌzin, -zɪn/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for topaz

British Dictionary definitions for topaz

topaz
/ (ˈtəʊpæz) /

noun

a white or colourless mineral often tinted by impurities, found in cavities in igneous rocks and in quartz veins. It is used as a gemstone. Composition: hydrated aluminium silicate. Formula: Al 2 SiO 4 (F,OH) 2 . Crystal structure: orthorhombic
oriental topaz a yellowish-brown variety of sapphire
false topaz another name for citrine
  1. a yellowish-brown colour, as in some varieties of topaz
  2. (as adjective)topaz eyes
either of two South American hummingbirds, Topaza pyra and T. pella

Word Origin for topaz

C13: from Old French topaze, from Latin topazus, from Greek topazos
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for topaz

topaz
[ tōpăz′ ]

A colorless, blue, yellow, brown, or pink orthorhombic mineral valued as a gem. Topaz occurs as transparent or translucent prisms in silica-rich igneous rocks, such as pegmatite, and in tin-bearing rock veins. Chemical formula: Al2SiO4(F,OH)2.
Any of various yellow gemstones, especially a yellow variety of sapphire or corundum.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Book Your Online Tutor Now