(1) The capacity of a communication line, normally expressed in bits per second (bps).
(2) The difference, expressed in hertz, between the highest and the lowest frequencies of a range of frequencies.
(3) In asynchronous transfer mode (ATM), the capacity of a virtual channel, expressed in terms of peak cell rate (PCR), sustainable cell rate (SCR), and maximum burst size (MBS).
(4) A measure of the capacity of a communication transport medium (such as a TV cable) to convey data.
(5) The range of frequencies an electronic system can transmit or receive. The greater the bandwidth of a system, the more information the system can transfer in a given period of time.