- noun data transfer between two devices with a number of bits, usually one byte wide, being sent simultaneously
- The simultaneous transfer of bits, characters, or data units utilizing multiple lines, fibers, channels, or the like. For example, the use of eight wires to simultaneously transfer each of the eight bits of a byte. This contrasts with serial transfer, in which bits, characters, or data units are sent one at a time in sequence. Also called parallel data transfer.