Crystalnoun
(countable) A solid composed of an array of atoms or molecules possessing long-range order and arranged in a pattern which is periodic in three dimensions.
Crystalnoun
(countable) A piece of glimmering, shining mineral resembling ice or glass.
Crystalnoun
(uncountable) A fine type of glassware, or the material used to make it.
Crystalnoun
Crystal meth: methamphetamine hydrochloride.
Crystalnoun
The glass over the dial of a watch case.
Crystaladjective
Very clear.
Crystalnoun
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.
Crystalnoun
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.
Crystalnoun
A species of glass, more perfect in its composition and manufacture than common glass, and often cut into ornamental forms. See Flint glass.
Crystalnoun
The glass over the dial of a watch case.
Crystalnoun
Anything resembling crystal, as clear water, etc.
Crystaladjective
Consisting of, or like, crystal; clear; transparent; lucid; pellucid; crystalline.
Crystalnoun
a solid formed by the solidification of a chemical and having a highly regular atomic structure
Crystalnoun
a crystalline element used as a component in various electronic devices
Crystalnoun
a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces
Crystalnoun
colorless glass made of almost pure silica
Crystalnoun
glassware made of quartz
Crystalnoun
a protective cover that protects the face of a watch
Crystalnoun
a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces
Crystalnoun
any solid consisting of a symmetrical, ordered, three-dimensional aggregation of atoms or molecules.
Crystalnoun
a crystalline piece of semiconductor used as an oscillator or transducer.
Crystalnoun
a clear transparent mineral, especially quartz
Crystalnoun
a piece of crystalline substance believed to have healing powers.
Crystalnoun
highly transparent glass with a high refractive index
Crystalnoun
articles made of crystal glass
Crystalnoun
the glass over a watch face.
Crystalnoun
short for crystal meth (methamphetamine)
Crystaladjective
clear and transparent like crystal
Crystal
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations.
Quartznoun
(mineral) The most abundant mineral on the earth's surface, of chemical composition silicon dioxide, SiO2. It occurs in a variety of forms, both crystalline and amorphous. Found in every environment.
Quartznoun
A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in cryptocrystalline massive forms varying in color and degree of transparency, being sometimes opaque.
Quartznoun
colorless glass made of almost pure silica
Quartznoun
a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities
Quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2.