noun🔗ShareالفلوجستونThe hypothetical fiery principle formerly assumed to be a necessary constituent of combustible bodies and to be given up by them in burning."Chemists once believed that wood released phlogiston into the air as it burned. "اعتقد الكيميائيون ذات مرة أن الخشب يطلق الفلوجستون في الهواء أثناء احتراقه.theorychemistrysubstancephysicsscienceenergyChat with AIVocabulary GamePractice Reading