rock crystal

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noun

transparent quartz, especially when colorless.

Nearby words

  1. rock cod,
  2. rock cornish,
  3. rock crab,
  4. rock creek butte,
  5. rock cress,
  6. rock cycle,
  7. rock dove,
  8. rock dust,
  9. rock elm,
  10. rock falls

Origin of rock crystal

First recorded in 1660–70

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for rock crystal

rock crystal

noun

a pure transparent colourless quartz, used in electronic and optical equipment. Formula: SiO 2
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012