bps

1. Short for bits per second, bps is a measurement of the data transmission speed. bps is an indication of how many bits that pass a certain point in one second. The larger the bps rate the faster the download and/or upload time will be.
2. Short for bytes per second and also sometimes abbreviated as B/s, Bps is the a speed is measured in bytes received per second. The difference between the two abbreviations is the uppercase and lowercase b.

Also see: Baud, Bit, Byte, Kbps, Measurement, Modem definitions