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decibel
Definitions
[ˈdɛsɪb(ɛ)l], (Noun)
Definitions:
- a unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale
Phrases:
Origin
:
early 20th century: from deci- ‘ten’ + bel (the unit being one tenth of a bel)
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definition by Oxford Dictionaries