noun🔗ShareKilojouleAn SI unit of energy equal to 103 joules. Symbol: kJ"The nutrition label showed that the cereal contained 600 kilojoules per serving. "Das Nährwertetikett zeigte, dass das Müsli 600 Kilojoule pro Portion enthielt.energyphysicsscienceunitamountChat with AIVocabulary GamePractice Reading