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crystal US English

A piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces

crystal set US English

A simple early form of radio receiver with a crystal touching a metal wire as the rectifier (instead of a tube or transistor), and no amplifier or loudspeaker, necessitating headphones or an earphone

crystal clear US English

Completely transparent and unclouded

crystal axis US English

Each of three axes used to define the edges of the unit cell of a crystal

crystal ball US English

A solid globe of glass or rock crystal, used by fortune-tellers and clairvoyants for crystal-gazing

crystal class US English

Each of thirty-two categories of crystals classified according to the possible combinations of symmetry elements possessed by the crystal lattice

crystal form US English

A set of crystal faces defined according to their relationship to the crystal axes

crystal gazer US English

A person who looks intently into a crystal ball with the aim of seeing images relating to future or distant events

lead crystal US English

Another term for lead glass.

mixed crystal US English

A crystal formed from more than one substance

rock crystal US English

Transparent quartz, typically in the form of colorless hexagonal crystals

crystal-gazing US English

Looking intently into a crystal ball with the aim of seeing images relating to future or distant events

crystal healing US English

The use of the healing powers of crystals in alternative medicine

crystal lattice US English

The symmetrical three-dimensional arrangement of atoms inside a crystal

Crystal Palace US English

A large building of prefabricated iron and glass resembling a giant greenhouse, designed by Joseph Paxton for the Great Exhibition of 1851 in Hyde Park, London, and re-erected at Sydenham near Croydon; it was accidentally burned down in 1936

crystal system US English

Each of seven categories of crystals (cubic, tetragonal, orthorhombic, trigonal, hexagonal, monoclinic, and triclinic) classified according to the possible relations of the crystal axes

crystal violet US English

A synthetic violet dye, related to rosaniline, used as a stain in microscopy and as an antiseptic in the treatment of skin infections

liquid crystal US English

A substance that flows like a liquid but has some degree of ordering in the arrangement of its molecules

photonic crystal US English

A synthetic crystal that can manipulate or be sensitized to respond to specific wavelengths of light. Its development suggests the possibility of increased miniaturization and efficiency of computing components and other technologies

liquid crystal display US English

A form of visual display used in electronic devices in which a layer of a liquid crystal is sandwiched between two transparent electrodes. The application of an electric current to a small area of the layer alters the alignment of its molecules, which affects its reflectivity or its transmission of polarized light and makes it opaque

crystal clear in crystal US English

Completely transparent and unclouded

meth US English

The drug methamphetamine

crystal meth in meth US English

The drug methamphetamine

seed crystal in seed US English

A small crystal introduced into a liquid to act as a nucleus for crystallization

seed US Thesaurus

apple seeds

crystal glass in crystal US English

Highly transparent glass with a high refractive index

crystal radio in crystal set US English

A simple early form of radio receiver with a crystal touching a metal wire as the rectifier (instead of a tube or transistor), and no amplifier or loudspeaker, necessitating headphones or an earphone

crystal therapy in crystal healing US English

The use of the healing powers of crystals in alternative medicine