Lexic.us

Definition of Topaz

1. Noun. A yellow quartz.

2. Noun. A mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone.

3. Noun. A light brown the color of topaz.

Definition of Topaz

1. n. 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.

Definition of Topaz

1. Noun. a clear, yellowish-brown gemstone. ¹

2. Noun. a yellowish-brown color, like that of the gemstone. ¹

3. Adjective. Of a yellowish-brown color, like that of the gemstone. ¹

¹ Source: wiktionary.com

Definition of Topaz

1. a mineral [n -ES] : TOPAZINE [adj]

Medical Definition of Topaz

1. 1. A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colourless, 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. Either one of two species of large, brilliantly coloured humming birds of the Topaza, of South America and the West Indies. 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. See the Note under Quartz. Origin: OE. Topas, F. Topaze, L. Topazos, or topazion, a kind of precious stone, Gr. Topazos, topazion; 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. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Topaz

top sheet top side top spot top tier top tiers top totty top up topagnosis topalgia toparch

toparchies toparchs toparchy topau topaz (current term) topazes topazine topazlike topazolite topazolites

topbar topbars topboot topboots topcloth topcloths topcoat topcoats topcolor

Literary usage of Topaz

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Encyclopedia Americana: A Library of Universal Knowledge (1920)
"topaz, a mineral having the composition of an aluminum fluo-silicate. It is not the topaz of Pliny and other early writers which was chrysolite (qv), ..."

2. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, Literature and (1911)
"topaz, a mineral usually found in connexion with granitic rocks and used, ... It is believed that the topaz of modern mineralogists was unknown to the ..."

3. The Data of Geochemistry by Frank Wigglesworth Clarke (1908)
"By this process topaz was formed, which was identified both crystallographically and ... This is the only satisfactory synthesis of topaz so far recorded. ..."

4. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, and General by Thomas Spencer Baynes (1888)
"The topaz of modern mineralogists was unknown to the ancients. topaz occurs either crystallized, in association with granitic rocks, or in the form of ..."

5. Encyclopædia Americana: A Popular Dictionary of Arts, Sciences, Literature by Thomas Gamaliel Bradford (1835)
"Two varieties of topaz have, without sufficient reason, been treated us forming ... But these varieties are united with common topaz by transitions, ..."

6. Elements of Chemical and Physical Geology by Gustav Bischof (1855)
"The localities in which topaz is found favours the opinion that it is produced ... This is the case with topaz occurring in dykes and nests in clay-slate, ..."

7. Encyclopædia Americana: A Popular Dictionary of Arts, Sciences, Literature by Thomas Gamaliel Bradford (1838)
"topaz ; a gem in jewelry, and one of tho most interesting species in mineralogy ... Two varieties of topaz have, without sufficient reason, been treated as ..."

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