What is the term used to describe the transparent part of a window?

The term used to describe the transparent part of a window is "pane." A pane refers specifically to a sheet of glass that is set in the frame of the window. It is the component that allows light to enter while providing a barrier against the elements. This term is universally understood in both residential and commercial contexts when discussing windows.

The other terms provided have different meanings in the context of windows and glazing. The frame is the structural element that holds the panes of glass in place, while glaze refers to the application or treatment that protects and adds functionality to window surfaces. "Glazed" is an adjective describing the state of having glass, but it does not directly identify the physical part of a window.