- See under crystal(def 10).
- a clear, transparent mineral or glass resembling ice.
- the transparent form of crystallized quartz.
- Chemistry, Mineralogy. a solid body having a characteristic internal structure and enclosed by symmetrically arranged plane surfaces, intersecting at definite and characteristic angles.
- anything made of or resembling such a substance.
- a single grain or mass of a crystalline substance.
- glass of fine quality and a high degree of brilliance.
- articles, especially glassware for the table and ornamental objects, made of such a glass.
- the glass or plastic cover over the face of a watch.
- Electronics. a quartz crystal ground in the shape of a rectangular parallelepiped, which vibrates strongly at one frequency when electric voltages of that frequency are placed across opposite sides: used to control the frequency of an oscillator (crystal oscillator), as of a radio transmitter.
- Slang. any stimulant drug in powder form, as methamphetamine or PCP.
- composed of crystal.
- resembling crystal; clear; transparent.
- Radio. pertaining to or employing a crystal detector.
- indicating the fifteenth event of a series, as a wedding anniversary.
- to make into crystal; crystallize.
- to cover or coat with, or as if with, crystal (usually followed by over).
Origin of crystal
- a piece of solid substance, such as quartz, with a regular shape in which plane faces intersect at definite angles, due to the regular internal structure of its atoms, ions, or molecules
- a single grain of a crystalline substance
- anything resembling a crystal, such as a piece of cut glass
- a highly transparent and brilliant type of glass, often used in cut-glass tableware, ornaments, etc
- (as modifier)a crystal chandelier
- something made of or resembling crystal
- crystal glass articles collectively
- a crystalline element used in certain electronic devices as a detector, oscillator, transducer, etc
- (as modifier)crystal pick-up; crystal detector
- a transparent cover for the face of a watch, usually of glass or plastic
- (modifier) of or relating to a crystal or the regular atomic arrangement of crystalscrystal structure; crystal lattice
- resembling crystal; transparentcrystal water
Word Origin and History for crystal oscillator
Old English cristal "clear ice, clear mineral," from Old French cristal (12c., Modern French crystal), from Latin crystallus "crystal, ice," from Greek krystallos, from kryos "frost," from PIE root *kru(s)- "hard, hard outer surface" (see crust). Spelling adopted the Latin form 15c.-17c. The mineral has been so-called since Old English; it was regarded by the ancients as a sort of fossilized ice. As a shortened form of crystal-glass it dates from 1590s. As an adjective, from late 14c.
- A homogenous solid formed by a repeating, three-dimensional pattern of atoms, ions, or molecules and having fixed distances between constituent parts.
- A mineral, especially a transparent form of quartz that has a crystalline structure and is often characterized by external planar faces.
- A homogenous solid formed by a repeating, three-dimensional pattern of atoms, ions, or molecules and having smooth external surfaces with characteristic angles between them. Crystals can occur in many sizes and shapes.♦ The particular arrangement in space of these atoms, molecules, or ions, and the way in which they are joined, is called a crystal lattice. There are seven crystal groups or systems. Each is defined on the basis of the geometrical arrangement of the crystal lattice.
- A natural or synthetic material, such as quartz or ceramic, that consists of such crystals. When subjected to mechanical stresses, crystalline materials can generate an electric charge or, when subjected to an electric field, they can generate mechanical vibrations in what is known as the piezoelectric effect.
- An electrical device, such as an oscillator or a diode used for detecting radio signals, made of such a material.