Definition of downconvert in English:

downconvert

Pronunciation /ˌdaʊnkənˈvəːt/ /ˈdaʊnkənvəːt/

verb

  • 1Electronics
    To convert (a signal) to a lower frequency.

  • 2To convert (a high definition video signal) to standard definition.

  • 3In quantum physics (of a photon): to be converted into two photons via downconversion.

Origin

1950s; earliest use found in Proceedings of the Institute of Radio Engineers. From down- + convert, after downconversion, down-converter.