Definition of psophometer in US English:

psophometer

noun

Electricity
  • An instrument for giving a reading approximately proportional to the subjective aural effect of the noise in a communication circuit.

Origin

1930s; earliest use found in Journal of the Institute of Electrical Engineers. From ancient Greek ψόϕος noise, one of a group of words of imitative origin, frequently expressing disgust, as ψό, exclamation of disgust or contempt + -meter.

Pronunciation

psophometer

/səˈfɒmɪtə/