The term 'GLASS PANEL' can be broken down into two words, 'PANE' and 'GLASS'. PANE is a four-letter word meaning a flat sheet of GLASS or other transparent material used in a window or door. GLASS is a material made from sand, soda ash, and limestone that is heated to a high temperature and then cooled quickly. Together, these two words form the term 'GLASS PANEL', which refers to a flat sheet of GLASS used as a wall or partition.