1. In network topology, a terminal of any branch of a network or an interconnection common to two or more branches of a network. Synonyms junction point, nodal point. 2. In a switched network, one of the switches forming the network backbone. Note: A node may also include patching and control facilities. 3. A technical control facility (TCF. ) 4. A point in a standing or stationary wave at which the amplitude is a minimum. In this sense, synonym null. 5. A data processing facility that provides information processing resources as part of a network. A node may support user application processes, server application processes or a combination of both kinds of processes.