decibel (dB) A dimensionless unit used in physics, which is equal to 10 times the logarithm to the base 10 of the ratio of two values:
dB = 10*log(value1/value2) ...
Decibel (DB): A unit of sound measurement. Sound doubles in loudness for every 10 decibels.
Decomposition: The breakdown of matter by bacteria and fungi.
Decibel (dB): Unit of measurement of sound level.
Declared Pregnant Woman: A woman who is also a radiation worker and has voluntarily informed her employer, in writing, of her pregnancy and the estimated date of conception.
decibel (DES-uh-bull). A unit for expressing the relative
intensity of sounds on a scale from zero for the average
least perceptible sound to about 130 for the average level at ...
D decibel
Definition (english only)
A logarithmic scale used to denote the intensity, or pressure level, of a sound relative to the threshold of human hearing.
objective environment
Actual physical, chemical, and social environment as described by objective measurements, such as noise levels in decibels and concentrations of air pollutants.
And a 2005 study published in the prestigious British medical journal, The Lancet, found that kids living near airports in Britain, Holland and Spain lagged behind their classmates in reading by two months for every five decibel increase above ...
 See also: Environmental, Air, Environment, Waste, Water
  
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