The term COMPLEX WHOLE can be defined as a SYSTEM, which is a 6 letter word. A SYSTEM is a set of interacting or interdependent components forming an integrated whole. It can also refer to a group of objects or elements that are organized for a common purpose. Systems can be found in many different areas, such as technology, biology, and economics. In technology, a SYSTEM can refer to a computer SYSTEM, a network of computers, or a combination of hardware and software. In biology, a SYSTEM can refer to the body's organs and tissues, or the environment in which an organism lives. In economics, a SYSTEM can refer to the economic structure of a country or region.