sone

[ sohn ]
/ soʊn /

noun

a unit for measuring the loudness of sound, equal to the loudness of a sound that, in the judgment of a group of listeners, is equal to that of a 1000-cycle-per-second reference sound having an intensity of 40 decibels.

Origin of sone

1945–50; < Latin sonus sound1
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British Dictionary definitions for sones

sone
/ (səʊn) /

noun

a subjective unit of loudness equal to that experienced by a normal person hearing a 1 kHz tone at 40 dB

Word Origin for sone

C20: from Latin sonus a sound
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012