noun🔗ShareKilojouleAn SI unit of energy equal to 103 joules. Symbol: kJ"The nutrition label showed that the cereal contained 600 kilojoules per serving. "L'étiquette nutritionnelle indiquait que les céréales contenaient 600 kilojoules par portion.energyphysicsscienceunitamountChat with AIVocabulary GamePractice Reading