Dictionary/硫酸りゅうさんRyuusan硫酸 (Ryuusan) is a Japanese noun meaning “sulfuric acid, sulphuric acid”.Meaningsnounsulfuric acid; sulphuric acidKanji in 硫酸硫sulphur酸acidRelated words酸化oxidation酸素oxygen (O)悲惨disastrous酸味sourness酢vinegar酸っぱいsour青酸hydrocyanic acid炭酸carbonic acid酸acid硫黄sulfur (S)一酸化炭素carbon monoxide酸性acidity