enâ²erÂ·vaâ²tor n. Usage Note: Sometimes people mistakenly use enervate to mean to invigorate or to excite by assuming that this word is a close cousin of the verb energize. In fact enervate does not come from the same source as energize (Greek energos, active). It comes from Latin nervus, sinew..
Also found in: Dictionary, Acronyms, Encyclopedia, Wikipedia. review of systems (ROS) (in a health history) a system-by-system review of the body functions. The ROS is begun during the initial interview with the patient and completed during the physical examination, as physical findings prompt further questions. Questions about family or personal history are included in each section.
Systems design is the process of defining the architecture, components, modules, interfaces, and data for a system to satisfy specified requirements. Systems design could be seen as the application of systems theory to product development. There is some overlap with the disciplines of systems analysis, systems architecture and systems engineering.