Look up: opal

1. Opal
   Opal is an amorphous, or non-crystalline form of silica with the formulae SiO2ùnH2O and a relative hardness of 6. It is always a secondary mineral, found lining and filling cavities in igneous and sedimentary rocks where it has been deposited by hot waters. The ordinary varieties are common but the...
   Found on http://www.probertencyclopaedia.com/brow
   
   
2. OPAL
   Older People with Active Lifestyles - a demographic grouping.
   Found on http://www.cim.co.uk/resources/glossary/
   
   
3. opal
   [n] - a translucent mineral consisting of hydrated silica of variable color
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. opal
   any of a large group of glassy,translucent silicas of various colors:some varieties,used as semiprecious stones,include the common opal,the black opal. Category: Various industries and crafts
   Found on http://www.mijnwoordenboek.nl/definition
   
   
5. Opal
   O'pal noun [ Latin opalus : confer Greek ..., Sanskrit upala a rock, stone, precious stone: confer French opale .] (Min.) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity. &...
   Found on http://www.encyclo.co.uk/webster/O/22
   
   
6. opal
   <chemical> A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity. ... The precious opal presents a peculiar play of colours of delicate tints, and is highly esteemed as a gem. One kind, with a varied play of colour in a reddish ground, is called ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
7. opal
   noun a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
8. Opal
   • (n.) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.
   Found on http://thinkexist.com/dictionary/meaning
   
   
9. opal
   silica mineral extensively used as a gemstone, a submicrocrystalline variety of cristobalite (q.v.). In ancient times opal was included among the ... [3 related articles]
   Found on http://www.britannica.com/eb/a-z/o/22
   
   
10. Opal
    Opal is a English girl name. The meaning of the name is `Precious Jewel` Where is it used? The name Opal is mainly used In English.How do they say it elsewhere? Opaline ( In English) From Old English. Opal doesn`t appear In 2007`s top-1000 name list.The last time Opal appeared In the top-1000 wa...
    Found on http://i-am-pregnant.com/names/girls/Opa
    
    
11. Opal
    1. A DSP language. ['OPAL: A High Level Language and Environment for DSP boards on PC', J.P. Schwartz et al, Proc ICASSP-89, 1989]. 2. The language of the object-oriented database GemStone. ['Making Smalltalk a Database System', G. Copeland et al, Proc SIGMOD'84, ACM 1984, pp.316- 325]. 3. A simulat...
    Found on http://foldoc.org/Opal
    
    
12. opal
    opal (ō'pul) , a mineral consisting of poorly crystalline to amorphous silica, SiO2·nH2O; the water content is quite variable but usually ranges from 3% to 10%. Common opal is usually colorless or white, but it may be gray, brown, yellow, or red; the color is due to fine-grained imp...
    Found on http://www.infoplease.com/ce6/sci/A08366
    
    
13. opal
    Form of hydrous silica (SiO₂.nH₂O), often occurring as stalactites and found in many types of rock. The common opal is translucent, milk-white, yellow, red, blue, or green, and lustrous. Precious opal is opalescent, the characteristic play of colours being caused by close-pack...
    Found on http://www.talktalk.co.uk/reference/ency
    
    
14. OPAL
    Older People with Active Lifestyles - demographic group.
    Found on http://www.chriswallcreative.co.uk/gloss
    
    
15. Opal
    `Opal` is an amorphous form of silica related to quartz, a mineraloid form, not a mineral. 3% to 21% of the total weight is water, but the content is usually between 6% to 10%. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most common...
    Found on http://en.wikipedia.org/wiki/Opal
    
    
16. Opal
    (programming language) `OPAL` (`OP`timized `A`pplicative `L`anguage) is a functional programming language first developed at the Technical University of Berlin. Example program: This is an example OPAL program, which calculates the GCD recursively. <br /> Signature file: `SIGNATURE` GCD `F...
    Found on http://en.wikipedia.org/wiki/Opal
    
    
17. Opal
    (fuel) `Opal` is a variety of low-aromatic 91 RON petrol developed in 2005 by BP Australia to combat the rising use of petrol as an inhalant in remote indigenous Australian communities. A 2010 senate report showed that the introduction of Opal in 106 communities across remote and regional Aus...
    Found on http://en.wikipedia.org/wiki/Opal
    
    
18. OPAL
    (software) The `Open Physics Abstraction Layer (OPAL)` is an open source realtime physics engine API similar to PAL. It is currently supported only by ODE, but can be extended to run off of other engines. OPAL is free software, released under both the LGPL and the BSD license. It was original...
    Found on http://en.wikipedia.org/wiki/OPAL
    
    
19. Opal
    (band) Photo © Laura Levine --> `Opal` were an American alternative/psychedelic band in the 1980s. They were part of the Paisley Underground musical style. The group formed in the mid-`80s under the name Clay Allison, featuring guitarist David Roback (previously of Rain Parade), bassist Ke...
    Found on http://en.wikipedia.org/wiki/Opal
    
    
20. Opal
    (armoured personnel carrier) The `Opal-I` is a multi-purpose fully amphibious armoured personnel carrier developed and produced by HSW S.A.. APC is a development of MT-LB that was produced in HSW on licence. Major changes are with reworked nose section and propellers for better in wate...
    Found on http://en.wikipedia.org/wiki/Opal