重質油 じゅうしつゆ Meanings Noun heavy oil See also: 軽質油 (けいしつゆ). Kanji 重 heavy. Read as ジュウ. 質 quality. Read as シツ. 油 oil. Read as ユ. Words containing 重質油 超重質油 (ちょうじゅうしつゆ) extra heavy oil Jinuma: Japanese Dictionary · Word lists