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1. WordNet® 3.0 (2006) |
opal
n 1: a translucent mineral consisting of hydrated silica of
variable color; some varieties are used as gemstones
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2. The Collaborative International Dictionary of English v.0.48 |
Opal \O"pal\, n. [L. opalus: cf. Gr. ?, Skr. upala a rock,
stone, precious stone: cf. F. opale.] (Min.)
A mineral consisting, like quartz, of silica, but inferior to
quartz in hardness and specific gravity.
[1913 Webster]
Note: The precious opal presents a peculiar play of colors
of delicate tints, and is highly esteemed as a gem. One
kind, with a varied play of color in a reddish ground,
is called the harlequin opal. The fire opal has
colors like the red and yellow of flame. Common opal
has a milky appearance. Menilite is a brown impure
variety, occurring in concretions at Menilmontant, near
Paris. Other varieties are cacholong, girasol,
hyalite, and geyserite.
[1913 Webster]
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3. The Free On-line Dictionary of Computing (30 December 2018) |
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 simulation language with provision for stochastic
variables. An extension of Autostat.
["C-E-I-R OPAL", D. Pilling, Internal Report,
C.E.I.R. Ltd. (1963)].
4. A language for compiler testing said to be used internally
by DEC.
5. A functional programming language designed at the
Technische Universitaet Berlin as a testbed for the
development of functional programs. OPAL integrates
concepts from Algebraic Specification and Functional
Programming, which favour the (formal) development of (large)
production-quality software written in a purely functional
style.
The core of OPAL is a strongly typed, higher-order,
strict applicative language which belongs to the tradition
of Hope and ML. The algebraic flavour of OPAL is visible
in the syntactical appearance and in the preference of
parameterisation to polymorphism.
OPAL supports: information hiding - each language unit is
divided into an interface (signature) and an implementation
part; selective import; parameterised modules; free
constructor views on sorts, which allow pattern-based
function definitions despite quite different implementations;
full overloading of names; puristic scheme language with no
built-in data types (except Booleans and denotations).
OPAL and its predecessor OPAL-0 have been used for some time
at the Technische Universitaet Berlin in CS courses and for
research into optimising compilers for applicative languages.
The OPAL compiler itself is writte entirely in OPAL.
An overview is given in "OPAL: Design And Implementation of an
Algebraic Programming Language".
<http://cs.tu-berlin.de/~opal/>.
<ftp://ftp.cs.tu-berlin.de/pub/local/uebb/papers/DesignImplOpal.ps.gz>.
(1995-02-16)
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4. U.S. Gazetteer Places (2000) |
Opal, WY -- U.S. town in Wyoming
Population (2000): 102
Housing Units (2000): 48
Land area (2000): 0.430749 sq. miles (1.115636 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 0.430749 sq. miles (1.115636 sq. km)
FIPS code: 57810
Located within: Wyoming (WY), FIPS 56
Location: 41.770449 N, 110.325918 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Opal, WY
Opal
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Common Misspellings > |
Opal pOpal pOal OpOal pal OOpal Oapl Opapl Oal Oppal Opla Opala Opl Opaal Oplal Opa Opall 9pal o9pal 9opal (pal o(pal (opal 0pal o0pal 0opal ipal oipal iopal ppal oppal popal kpal okpal kopal lpal olpal lopal apal epal upal O0al Op0al O0pal O)al Op)al O)pal Ooal Opoal Oopal Olal Oplal Olpal Opql Opaql Opqal Opwl Opawl Opwal Opsl Opasl Opsal Opxl Opaxl Opxal Opzl Opazl Opzal Op l Opa l Op al Opel Opil Opol Opul Opai Opali Opail Opao Opalo Opaol Opap Opalp Opapl Opak Opalk Opakl Opa, Opal, Opa,l Opa. Opal. Opa.l Definition commonly spelled as: Defanition or Defenition, Synonym as: Synonim, Sinonym or Sinonim, Thesaurus as: Thesorus or Thesauris, Dictionary as: Dictionery or Dictionry and Define is usually not misspelled. What does mispell meen? It Meens...
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