Definition of pre-fade in US English:

pre-fade

adjective

Sound Recording
  • Performed or occurring before programme material is faded up for transmission; (of equipment) used for monitoring material played at this time.

noun

Sound Recording
  • A technical facility for the monitoring of programme material prior to fading it up.

Origin

1940s. From pre- + fade.

Pronunciation

pre-fade

/ˈpriːfeɪd/