Origin of opalClassical Latin opalus from Classical Greek opallios from Sanskrit úpala?, (precious) stone
- A mineral of hydrated silica.
- A gemstone made of this mineral, noted for its rich iridescence.
Origin of opalMiddle English opalus from Latin alteration of Greek opallios probably from Sanskrit upalah from variant of upara- lower from upa below ; see upo in Indo-European roots.
- A female given name from the precious stone, invented in the nineteenth century.
- (Australia) A type of petrol made by British Petroleum designed to be unable to be used for petrol sniffing. [Developed 2005.]
opal - Computer Definition
The original name of software from CA Technologies that converts legacy output from mainframes and minicomputers into a graphical-based format. Now part of its Advantage Integration Server suite, the technology provides the development environment and supports 3270, 5250 and VT220 terminals and ODBC-compliant databases. Development can be done by drag and drop or by scripting in OpalScript or VBScript. A Telnet connection to the mainframe is provided and maintains a connection to the desktop allowing the Web browser or a Windows client with the software to have access to the newly formatted data. See green screen.
- The dull green was followed successively by amber, white opal, blue opal, straw opal, sea-green, horn colour and various pale tints of soda-lime glass, ranging from yellow to blue.
- For other forms of silica see OPAL and TRIDYMITE.
- The finest opal known is obtained in the Upper Cretaceous formation at White Cliffs, near Wilcannia, New South Wales, and at these mines about 700 men find constant employment.
- Hungary is the only country in Europe where the opal is found, namely at the famous mines of Vorosvagas in the county of Sáros, and at NagyMihaly in that of Zemplin.
- Experiments were also tried with a violet-coloured glass, a violet opal, a transparent black and with glasses shading from red to blue, red to amber and blue to green.