insulating glass

Definitions

Construction

  • glazing comprising two or more panes of glass, between which there exist(s) a hermetically sealed airspace(s), joined around the edges.

Real Estate

  • noun glass that is a combination of two or more panes enclosing a hermetically sealed air space, designed to reduce heat loss from buildings
http://www.dictionarycentral.com/definition/insulating-glass.html