炉 hearth, furnace, kiln, reactor 8 strokes jōyō, taught in secondary school old JLPT 1 #1359 in newspapers Readings Onロ Kunいろり In Chinese 炉, traditional 爐 Words written with it 原子炉 げんしろ atomic reactor 炉心 ろしん nuclear reactor core 高炉 こうろ blast furnace 香炉 こうろ censer 暖炉 だんろ fireplace 溶鉱炉 ようこうろ smelting furnace 電気炉 でんきろ electric furnace