👉 Unpressed is a concept in physics and engineering, which refers to an object or system that has zero pressure difference between its surroundings. This means that there is no pressure difference between any part of the object or system, as it can only be affected by external forces. The term "unpressed" is often used when discussing objects that are not compressed or stretched in any way, and where the pressure on one side of an object remains constant regardless of its orientation relative to the other sides.