Water and Wastewater Terms Beginning D

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

decibel (DES-uh-bull)

A unit for expressing the relative intensity of sounds on a scale from 0 decibels (dB) for the average least perceptible sound to about 130 dB for the average level at which sound causes pain to humans.