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2 definitions found

From: WordNet (r) 2.0

 S/N
      n : the ratio of signal intensity to noise intensity [syn: signal-to-noise
           ratio, signal-to-noise, signal/noise ratio, signal/noise]

From: WordNet (r) 2.0

 Sn
      n : a silvery malleable metallic element that resists corrosion;
          used in many alloys and to coat other metals to prevent
          corrosion; obtained chiefly from cassiterite where it
          occurs as tin oxide [syn: tin, atomic number 50]