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1. A connection between initiating and terminating nodes of a circuit. (188) 2. A single path provided by a transmission medium via either (a) physical separation, such as by multipair cable or (b) electrical separation, such as by frequency- or time-division multiplexing. (188) 3. A path for conveying electrical or electromagnetic signals, usually distinguished from other parallel paths. (188) 4. Used in conjunction with a predetermined letter, number, or codeword to reference a specific radio frequency. (188) 5. The portion of a storage medium, such as a track or a band, that is accessible to a given reading or writing station or head. 6. In a communications system, the part that connects a data source to a data sink.