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Definition of "crystal" []

  • A homogenous solid formed by a repeating, three-dimensional pattern of atoms, ions, or molecules and having fixed distances between constituent parts. (noun)
  • The unit cell of such a pattern. (noun)
  • A mineral, especially a transparent form of quartz, having a crystalline structure, often characterized by external planar faces. (noun)
  • A natural or synthetic crystalline material having piezoelectric or semiconducting properties. (noun)
  • An electronic device, such as an oscillator or detector, using such a material. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "crystal" in a sentence
  • "Q: Am I the only passenger whose primary reference for the term crystal ship is the song about heroin by the Doors?"
  • "In short the crystal is all about the exterior form, not about the displays or the experience inside the building."
  • "Another commercial has a dumb office worker with a glass snow globe, which he calls his crystal ball."