The term "whole sheet" refers to a complete, unbroken piece or layer of something. It can be used in various contexts such as paper products, where it means an entire sheet of paper; in construction, where it refers to a full-size plywood panel; and in baking, where it signifies one large, undivided cake pan. In essence, the phrase "whole sheet" implies that there are no missing or damaged parts, and the item is intact and usable as intended.