crystal

/'kristl/
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crystal

A scientist examines a quartz crystal under bright light.

Definition
  1. Noun:
    • A solid material whose atoms, molecules, or ions are arranged in a highly ordered, repeating three-dimensional structure: This is the scientific meaning, referring to the internal, regular atomic arrangement of substances like quartz, salt, or diamond.
    • A piece of a crystalline substance, often with flat geometric faces: This refers to a natural or artificially grown piece of a crystal, like a quartz crystal or a snow crystal.
    • High-quality, colorless glass, often used for making decorative objects or glassware: This refers to a type of fine glass, typically containing lead oxide, known for its brilliance and clarity (e.g., crystal vase).
    • The transparent protective cover over the face of a watch or clock: This is a specialized meaning in timepieces.
Examples of Usage
  • Noun:
    • The geologist examined the quartz crystal under a microscope. (Referring to a piece of a crystalline mineral.)
    • Table salt forms perfect cubic crystals. (Referring to the regular atomic structure.)
    • She inherited a beautiful set of crystal glasses. (Referring to high-quality glassware.)
    • He scratched the crystal of his wristwatch. (Referring to the watch glass.)
Advanced Usage
  • "Crystal clear": (idiomatic) extremely clear, transparent, or easy to understand.
    • The instructions were crystal clear.
    • The lake water was crystal clear.
  • "Crystal ball": a glass ball used in fortune-telling; used figuratively to refer to predicting the future.
    • I don't have a crystal ball to tell you what will happen next year.
Variants and Related Words
  • Crystalline (adj): having the structure or form of a crystal; clear and transparent like crystal.
    • The crystalline structure of ice.
  • Crystallize (verb): to form crystals; to make or become definite and clear.
    • The sugar crystallized in the jar.
    • Her ideas began to crystallize into a plan.
Synonyms
  • Gemstone (for a precious crystal like a diamond or emerald).
  • Glass (specifically for the glassware meaning, though "crystal" implies higher quality).
  • Watch glass (for the timepiece component).
Related Phrases
  • Liquid crystal: A state of matter with properties between liquids and crystals, used in display screens (LCD).
    • The laptop has a liquid crystal display.
Related Idioms
  • As clear as crystal: perfectly clear or obvious.
    • His explanation was as clear as crystal.
crystal

A scientist examines a quartz crystal under bright light.

Noun
  1. a protective cover that protects the face of a watch
  2. glassware made of quartz
  3. colorless glass made of almost pure silica
  4. a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces
  5. a crystalline element used as a component in various electronic devices
  6. a solid formed by the solidification of a chemical and having a highly regular atomic structure

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