A piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces
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
Completely transparent and unclouded
Each of three axes used to define the edges of the unit cell of a crystal
A solid globe of glass or rock crystal, used by fortune-tellers and clairvoyants for crystal-gazing
Each of thirty-two categories of crystals classified according to the possible combinations of symmetry elements possessed by the crystal lattice
A clock encased in or decorated with crystal glass.
A semiconductor diode, especially one comprising a semiconductor crystal with which a thin metal wire is in point contact; also called crystal rectifier.
The symmetrical electrostatic field which is produced by the atoms surrounding a central metal atom or ion in a crystal lattice and which acts on that atom or ion.
A set of crystal faces defined according to their relationship to the crystal axes
To stare intently into a crystal ball (or another translucent medium) in order to see images representing distant events, typically ones believed to be taking place in the future.
A person who looks intently into a crystal ball with the aim of seeing images relating to future or distant events
A solid sphere of polished crystal; especially one used for divining the future, etc.; a crystal ball.
A characteristic form adopted by crystals of a mineral or other substance; the shape and other external characteristics of a crystal.
Crystal methamphetamine (the drug methamphetamine in a powdered crystalline form)
A mine from which crystal, especially rock crystal, is obtained.
= crystal gazer.
Another term for lead glass.
A crystal formed from more than one substance
Transparent quartz, typically in the form of colorless hexagonal crystals
A person who cuts, shapes, or ornaments crystal.
Looking intently into a crystal ball with the aim of seeing images relating to future or distant events
The use of the healing powers of crystals in alternative medicine
The symmetrical three-dimensional arrangement of atoms inside a crystal
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
The branch of physics concerned with the properties of crystalline substances.
A method of obtaining pure single crystals by inserting a seed crystal in the molten substance and gradually withdrawing it.
Each of seven categories of crystals (cubic, tetragonal, orthorhombic, trigonal, hexagonal, monoclinic, and triclinic) classified according to the possible relations of the crystal axes
A synthetic violet dye, related to rosaniline, used as a stain in microscopy and as an antiseptic in the treatment of skin infections
A vision, especially as seen whilst gazing into a crystal ball or another translucent medium.
= Iceland spar.
A substance that flows like a liquid but has some degree of ordering in the arrangement of its molecules
A soft substance in which the molecules occupy the points of a regular crystal lattice but have freedom of rotation about those points.
Quartz in crystalline form, rock crystal; a piece or single crystal of this, (later especially) one used in a clock or other device.
An iridescent variety of rock crystal.
The branch of chemistry concerned with the relationship between chemical composition and the structure and other properties of crystalline substances; the properties of a substance in regard to this.
(Especially of an oscillator) having a frequency determined by a piezoelectric crystal.
One that employs a crystal diode to rectify a high-frequency current, or to produce an audio signal from a radio signal.
A microphone which depends for its action on the piezoelectric activity of a crystalline substance.
An oscillator whose frequency is determined by a piezoelectric crystal.
A receiver of any kind (especially a vessel or container) that is made of crystal.
A crystal diode used as a rectifier.
A crystalline structure; the structure of crystals; especially the ordered symmetrical arrangement of atoms within a crystalline solid.
Quartz; a quartz crystal.
Optics a crystal in which the index of refraction is greater for the ordinary than the extraordinary ray.
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
A theoretical model based on the interaction of a central metal atom or ion with the crystal field, used to describe the electronic structure of solid inorganic complexes.
The drug methamphetamine in a powdered crystalline form, used illegally as a stimulant