Different types of opals.
opal definition by Webster's New World
Origin: Classical Latin opalus ; from Classical Greek opallios ; from Sanskrit úpalaḥ, (precious) stone
opal definition by American Heritage Dictionary
- A mineral of hydrated silica.
- A gemstone made of this mineral, noted for its rich iridescence.
Origin: Middle English opalus, from Latin, alteration of Greek opallios, probably from Sanskrit upalaḥ, from variant of upara-, lower, from upa, below; see upo in Indo-European roots.
- oˈpal·ineˌ adjective
opal - Computer Definition
The original name of software from Computer Associates that converts legacy output from mainframes and minicomputers into a graphical-based format. Now part of their 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.
opal - Science Definition