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Hasil cari dari kata atau frase: Iceland crystal(0.01362 detik)
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Definition: Iceland crystal
Crystal \Crys"tal\ (kr[i^]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.
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.
3. A species of glass, more perfect in its composition and
manufacture than common glass, and often cut into
ornamental forms. See Flint glass.
4. The glass over the dial of a watch case.
5. Anything resembling crystal, as clear water, etc.
The blue crystal of the seas. --Byron.
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