The term 'Detachable Spacecraft Unit' can be summarized as a POD, which is a three letter acronym. A POD is a type of spacecraft that is designed to be detached from its main body and used for a variety of purposes, such as exploration, communication, or transportation. It is typically equipped with its own propulsion system and can be used to carry out a variety of tasks independently. Pods are often used in space exploration missions, as they provide an efficient way to explore and study distant planets and other celestial bodies.