definition kbps
(KiloBits or KiloBytes per SECond) One thousand bits or bytes per second. Kbps is a measurement of peripheral data transfer or network transmission speed. The correct abbreviation is b for bits and B for bytes; however, b and B are often interchanged. See space/time, Mbps and Gbps. Lower Case b - Kbps, Kb/sec, Kb/s Kilobits per second is used to rate serial data transmission devices such as analog modems.