The term 'GLASS Plate' can be broken down into two words, 'PANE' and 'GLASS'. PANE is a four letter word meaning a sheet of GLASS, usually framed in wood or metal, used for windows, doors, or partitions. GLASS is a material made from sand, soda ash, and limestone that is heated to a high temperature and then cooled quickly to form a hard, transparent material. GLASS plates are often used as serving dishes, decorative pieces, or for scientific experiments.