酸さん性せい染せん料りょうさんせいせんりょうMeanings1nounacid dyeA dye that is applied in an acidic bath, used especially for protein fibers such as wool and silk.ウールの染せん色しょくには酸さん性せい染せん料りょうがよく使つかわれる。Acid dyes are often used for dyeing wool.