ロジン酸さんMeanings1nounrhodinic acid; rosin acidchemistryTechnical term in chemistry; refers to a mixture of resin acids obtained from rosin.ロジン酸さんは、松脂まつやにから得えられる樹じゅ脂し酸さんの混こん合ごう物ぶつです。Rosin acid is a mixture of resin acids obtained from pine resin.