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

crystal \crys"tal\ kri^s"tal, n. oe. cristal, f. cristal,
   l. crystallum crystal, ice, fr. gr. kry`stallos, fr. kry`os
   icy cold, frost; cf. as. crystalla, fr. l. crystallum; prob.
   akin to e. crust. see crust, raw.
   1. chem.  min. the regular form which a substance tends to
      assume in solidifying, through the inherent power of
      cohesive attraction. it is bounded by plane surfaces,
      symmetrically arranged, and each species of crystal has
      fixed axial ratios. see crystallization.
      1913 webster

   2. the material of quartz, in crystallization transparent or
      nearly so, and either colorless or slightly tinged with
      gray, or the like; -- called also rock crystal.
      ornamental vessels are made of it. cf. smoky quartz,
      pebble; also brazilian pebble, under brazilian.
      1913 webster

   3. a species of glass, more perfect in its composition and
      manufacture than common glass, and often cut into
      ornamental forms. see flint glass.
      1913 webster

   4. the glass over the dial of a watch case.
      1913 webster

   5. anything resembling crystal, as clear water, etc.
      1913 webster

            the blue crystal of the seas.         --byron.
      1913 webster

   blood crystal. see under blood.

   compound crystal. see under compound.

   iceland crystal, a transparent variety of calcite, or
      crystallized calcium carbonate, brought from iceland, and
      used in certain optical instruments, as the polariscope.
      

   rock crystal, or mountain crystal, any transparent
      crystal of quartz, particularly of limpid or colorless
      quartz.
      1913 webster
see also:
crust raw crystallization rock crystal smoky quartz pebble 
brazilian pebble brazilian flint glass blood crystal blood 
compound crystal compound iceland crystal rock crystal mountain crystal 

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

crystal \crys"tal\, a.
   consisting of, or like, crystal; clear; transparent; lucid;
   pellucid; crystalline.
   1913 webster

         through crystal walls each little mote will peep.
                                                  --shak.
   1913 webster

         by crystal streams that murmur through the meads.
                                                  --dryden.
   1913 webster

         the crystal pellets at the touch congeal,
         and from the ground rebounds the ratting hail. --h.
                                                  brooks.
   1913 webster

[3] : WordNet (r) 2.0

crystal
     n 1: a solid formed by the solidification of a chemical and
          having a highly regular atomic structure
     2: a crystalline element used as a component in various
        electronic devices
     3: a rock formed by the solidification of a substance; has
        regularly repeating internal structure; external plane
        faces syn: crystallization
     4: colorless glass made of almost pure silica syn: quartz
        glass, quartz, vitreous silica, lechatelierite
     5: glassware made of quartz
     6: a protective cover that protects the face of a watch syn: watch
        crystal, watch glass
see also:
crystallization quartz glass quartz vitreous silica lechatelierite watch crystal 
watch glass 

[4] : Moby Thesaurus II by Grady Ward, 1.0

114 moby thesaurus words for "crystal":
   benzedrine, benzedrine pill, c, dexamyl, dexamyl pill, dexedrine,
   dexedrine pill, methedrine, amphetamine, amphetamine sulfate,
   avalanche, blizzard, clear, clear as crystal, clear-cut, cocaine,
   coke, craggy, crystal-clear, crystalline,
   dextroamphetamine sulfate, diaphane, diaphanous, driven snow,
   filmy, flake, flurry, football, gauzy, gem, gem stone, gossamer,
   gossamery, granular snow, gravelly, gritty, heart, igloo,
   jolly bean, lapideous, light-pervious, limpid, lithoid, lithoidal,
   lucent, lucid, luminous, mantle of snow,
   methamphetamine hydrochloride, mogul, monolithic, nonopaque,
   pebbled, pebbly, peekaboo, pellucid, pep pill, porphyritic,
   precious stone, purple heart, revealing, rock-ribbed, rock-strewn,
   rock-studded, rocklike, rocky, sandy, see-through,
   semiprecious stone, sheer, shingled, shingly, slosh, slush, snow,
   snow banner, snow bed, snow blanket, snow blast, snow fence,
   snow flurry, snow roller, snow slush, snow squall, snow wreath,
   snow-crystal, snowball, snowbank, snowbridge, snowcap, snowdrift,
   snowfall, snowfield, snowflake, snowland, snowman, snowscape,
   snowshed, snowslide, snowslip, snowstorm, speed, stimulant, stone,
   stonelike, stony, thin, trachytic, translucent, transparent,
   transpicuous, unclouded, upper, wet snow

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

crystal
     
        concurrent representation of your space-time algorithms.
     
        a recursion equation parallel language.
     
        "a parallel language and its compilation to multiprocessor
        machines or vlsi", m.c. chen, 13th popl, acm 1986 pp.131-139.
     
        1994-12-06
     
     
see also:
recursion equation 

[6] : Easton's 1897 Bible Dictionary

crystal
   ezek. 1:22, with the epithet "terrible," as dazzling the
   spectators with its brightness. the word occurs in rev. 4:6;
   21:11; 22:1. it is a stone of the flint order, the most refined
   kind of quartz. the greek word here used means also literally
   "ice." the ancients regarded the crystal as only pure water
   congealed into extreme hardness by great length of time.
   

[7] : U.S. Gazetteer (1990)

crystal, mi
  zip codes: 48818
crystal, mn city, fips 14158
  location: 45.03730 n, 93.35935 w
  population 1990: 23788 9541 housing units
  area: 14.9 sq km land, 0.2 sq km water
  zip codes: 55428
crystal, nd city, fips 17060
  location: 48.59845 n, 97.66836 w
  population 1990: 199 96 housing units
  area: 1.7 sq km land, 0.0 sq km water
  zip codes: 58222

[8] : U.S. Gazetteer Places (2000)

crystal, nm -- u.s. census designated place in new mexico
   population 2000:    347
   housing units 2000: 113
   land area 2000:     4.397142 sq. miles 11.388545 sq. km
   water area 2000:    0.020350 sq. miles 0.052705 sq. km
   total area 2000:    4.417492 sq. miles 11.441250 sq. km
   fips code:            19080
   located within:       new mexico nm, fips 35
   location:             36.030056 n, 108.986649 w
   zip codes 1990:    
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    crystal, nm
    crystal

[9] : U.S. Gazetteer Places (2000)

crystal, nd -- u.s. city in north dakota
   population 2000:    167
   housing units 2000: 92
   land area 2000:     0.652266 sq. miles 1.689360 sq. km
   water area 2000:    0.000000 sq. miles 0.000000 sq. km
   total area 2000:    0.652266 sq. miles 1.689360 sq. km
   fips code:            17060
   located within:       north dakota nd, fips 38
   location:             48.596754 n, 97.670581 w
   zip codes 1990:     58222
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    crystal, nd
    crystal

[10] : U.S. Gazetteer Places (2000)

crystal, mn -- u.s. city in minnesota
   population 2000:    22698
   housing units 2000: 9481
   land area 2000:     5.776568 sq. miles 14.961241 sq. km
   water area 2000:    0.092601 sq. miles 0.239836 sq. km
   total area 2000:    5.869169 sq. miles 15.201077 sq. km
   fips code:            14158
   located within:       minnesota mn, fips 27
   location:             45.037264 n, 93.359577 w
   zip codes 1990:     55428
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    crystal, mn
    crystal

Crystal >> C Words
Crystal, definition of term: Crystal
crystal_pag1.html

Crystal Lattice >> C Words
Crystal Lattice, definition of term: Crystal Lattice
crystal+lattice_pag1.html

Crystal Glass >> C Words
Crystal Glass, definition of term: Crystal Glass
crystal+glass_pag1.html

Rock Crystal >> R Words
Rock Crystal, definition of term: Rock Crystal
rock+crystal_pag1.html

Liquid Crystal >> L Words
Liquid Crystal, definition of term: Liquid Crystal
liquid+crystal_pag1.html

Ice Crystal >> I Words
Ice Crystal, definition of term: Ice Crystal
ice+crystal_pag1.html

Liquid Crystal >> L Words
Liquid Crystal, definition of term: Liquid Crystal
liquid+crystal_pag1.html