Opal

5 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]

From WordNet (r) 2.0 [wn]:

  opal
       n : a translucent mineral consisting of hydrated silica of
           variable color; some varieties are used as gemstones

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  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
          variable}s.  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 program}s.  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 module}s; 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 {Boolean}s 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".
       
          {Home (http://www.cs.tu-berlin.de/~opal/)}.
       
         
       {(ftp://ftp.cs.tu-berlin.de/pub/local/uebb/papers/DesignImplOpal.ps.gz)}.
       
          (1995-02-16)
       
       

From U.S. Gazetteer (1990) [gazetteer]:

  Opal, SD
    Zip code(s): 57765
  Opal, WY (town, FIPS 57810)
    Location: 41.76996 N, 110.32082 W
    Population (1990): 95 (54 housing units)
    Area: 1.1 sq km (land), 0.0 sq km (water)

From U.S. Gazetteer Places (2000) [gaz-place]:

  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