radiational

/ˌreɪdiˈeɪʃənəl/
adjective
  1. Relating to or involving radiation (energy emitted as waves or particles).
    • Scientists studied the radiational effects of the sun on the planet's atmosphere.
    • Radiational cooling happens when the ground loses heat on a clear night.
    • The radiational properties of the material make it useful for solar panels.
Synonyms