1. In communications systems and network topologies, a route between any two points. 2. In radio communications, the route that (a) lies between a transmitter and a receiver and (b) may consist of two or more concatenated links. Note: Examples of paths are line-of-sight paths and ionospheric paths. 3. In a computer program, the logical sequence of instructions executed by a computer. 4. In database management systems, a series of physical or logical connections between records or segments, usually requiring the use of pointers.