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double glazing

American  

noun

Building Trades.
  1. glazing consisting of two thicknesses of glass with a dead air space between them.


double glazing British  

noun

  1. two panes of glass in a window, fitted to reduce the transmission of heat, sound, etc

  2. the fitting of glass in such a manner

"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

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