noun 다운로드 🔗공유 플로지스톤 The hypothetical fiery principle formerly assumed to be a necessary constituent of combustible bodies and to be given up by them in burning. Examples : "Chemists once believed that wood released phlogiston into the air as it burned. " 화학자들은 한때 나무가 탈 때 공기 중으로 플로지스톤을 방출한다고 믿었습니다. theory chemistry substance physics science energy AI와 채팅어휘 게임독해 연습
