Crossword Genius

Unit of sound intensity (7)

Ross

I believe the answer is:

decibel

'unit of sound intensity' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for decibel that I've seen before include "Unit for measuring intensity of sound" , "Measure of sound" , "I relate to volume" , "Level of noise" , "Noise unit" .)

I've seen this clue in The Independent, the Sydney Morning Herald, The Times, The Guardian and The Telegraph.
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