Sideband
1. A range of frequencies occupied by the spectral components resulting from the modulation of a carrier wave by a signal.
Note: The terms upper sideband and lower sideband are used to denote the ranges higher than or lower than the carrier frequency respectively.
2. A discrete frequency in a sideband (properly called a side frequency).
Reference: B.S.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
