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Text File  |  1992-09-02  |  274b  |  8 lines
  1. In chemistry, the conversion of a solid to
  2. vapour without passing through the liquid
  3. phase. Some substances that do not sublime at
  4. atmospheric pressure can be made to do so at
  5. low pressures. This is the principle of
  6. freeze-drying, during which ice sublimes at
  7. low pressure.
  8.