windowpane
A windowpane is a sheet of glass that forms part of a window. It is the transparent element that allows light to enter a building while providing a barrier against weather. In architectural terms a window may be described as a frame containing one or more panes, sometimes subdivided by muntins into individual lights or panes.
Most modern windowpanes are made of float glass, a soda-lime glass produced by the float glass process.
Historically, window panes were small and expensive, with larger panes achieved through advances in glassmaking and
The term reflects the primary meaning of a pane of glass in a window, though it may