See Also: decibel(medicine)
decibel(dictionary)
decibel (dB)(encyclopedia)
decibel(dictionary)

decibel (iou)



decibel noun. E20.
[from DECI- + BEL noun1.]
A logarithmic unit (one-tenth of a bel, abbreviation dB) used to express the ratio between two levels of sound intensity, electrical power, etc., one of which is usu. a (stated or understood) reference level; loosely a degree of noise.