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8 dictionary results for: Topaz
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
to·paz       [toh-paz] Pronunciation Key
–noun
1.a mineral, a fluosilicate of aluminum, usually occurring in prismatic orthorhombic crystals of various colors, and used as a gem.
2.citrine (def. 2).
3.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.
[Origin: 1225–75; < L topazus < Gk tópazos; r. ME topace < OF < L, as above]

—Related forms
to·paz·ine       [toh-puh-zeen, -zin] Pronunciation Key, adjective
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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American Heritage Dictionary - Cite This Source - Share This
to·paz       (tō'pāz')  Pronunciation Key 
n.  
    1. 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.
    2. Any of various yellow gemstones, especially a yellow variety of sapphire or corundum.
  2. A light yellow variety of quartz.
  3. Either of two South American hummingbirds (Topaza pyra or T. pella) having colorful plumage.


[Middle English topace, from Old French, from Latin topazus, from Greek topazos.]

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Online Etymology Dictionary - Cite This Source - Share This
topaz 
colored crystalline gem, c.1272, from O.Fr. topace (11c.), from L. topazus, from Gk. topazos, topazion, of obscure origin. Pliny says it was named for an island in the Red or Arabian Sea, where it was mined; linguists conjecture a connection with Skt. tapas "heat, fire."

Online Etymology Dictionary, © 2001 Douglas Harper
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WordNet - Cite This Source - Share This
topaz

noun
1. a yellow quartz 
2. a mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone 
3. a light brown the color of topaz [syn: tan] 

WordNet® 3.0, © 2006 by Princeton University.
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The American Heritage Science Dictionary - Cite This Source - Share This
topaz       (tō'pāz')  Pronunciation Key 
  1. 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.
  2. Any of various yellow gemstones, especially a yellow variety of sapphire or corundum.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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U.S. Gazetteer - Cite This Source - Share This

Topaz, CA Zip code(s): 96133

U.S. Gazetteer, U.S. Census Bureau
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Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Topaz

To"paz\, n. [OE. topas, F. topaze, L. topazos, or topazion, a kind of precious stone, Gr. to`pazos, topa`zion; possibly akin to Skr. tap to glow (cf. Tepid). According to some, the name is from Topazos, a small island in the Red Sea, where the Romans obtained a stone which they called by this name, but which is the chrysolite of the moderns.]

1. (Min.) A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades. It sometimes occurs massive and opaque. It is a fluosilicate of alumina, and is used as a gem.

2. (Zo["o]l.)Either one of two species of large, brilliantly colored humming birds of the Topaza, of South America and the West Indies.

Note: The two tail feathers next to the central ones are much longer that the rest, curved, and crossed. The Throat is metallic yellowish-green, with a tint like topaz in the center, the belly is bright crimson, the back bright red. Called also topaz hummer.

False topaz. (Min.) See the Note under Quartz.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Easton's 1897 Bible Dictionary - Cite This Source - Share This

Topaz

Heb. pitdah (Ezek. 28:13; Rev. 21:20), a golden yellow or "green" stone brought from Cush or Ethiopia (Job 28:19). It was the second stone in the first row in the breastplate of the high priest, and had the name of Simeon inscribed on it (Ex. 28:17). It is probably the chrysolite of the moderns.

Easton's 1897 Bible Dictionary
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