radiometer From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounA device that measures radiant energy. Related wordsSynonymsmicrowaveirradiometerroentgenometerradiomicrometerphotoradiometerradiographreflectometerspectroradiometerriometertelespectroradiometerabsorptiometerpyrheliometerradiotelemeterradiation pyrometerratemeterdosimeter References Wiktionary — radiometer Wikipedia — radiometer