signal-to-noise ratio - definition and synonyms

noun 

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singularsignal-to-noise ratio
pluralsignal-to-noise ratios
  1. 1
    [countable] the amount of useful information that you get from something, compared to the amount that is useless
  2. 2
    a measure of the strength of the radio signal that you want to hear, compared to the strength of other signals you can also hear