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Noun: double glazing  'dú-bul 'gley-zing
  1. A window with two panes of glass and a space between them; reduces heat and noise transmission through the window
    "They installed double glazing to improve their home's energy efficiency"
Verb: double-glaze  ,dú-bul'gleyz
  1. Provide with two sheets of glass
    "They decided to double-glaze their windows for better insulation"

Type of: glass, glaze, window

Encyclopedia: Double glazing