Vocabulary What does 尿酸 (にょうさん, nyousan) mean? 尿酸 (にょうさん, nyousan) means uric acid. Quick factsReadingにょうさんRomajinyousanPart of speechnoun 尿酸にょうさんnyousanuric acid1noun uric acidKanji in this word尿urine酸acid; sour; bitter, sorrowful