lex siliaglossary / LEX SILIA lex Silia (leks sil-ee-[schwa]). [Latin] Roman law. A law providing for personal actions for a fixed sum of money; specif., a law from perhaps 250 B.C. introducing the legis actio per condictionem to claim a fixed sum of money. 词条贡献者 译员Jerry,知名法学院知识产权法,专注翻译各种与版权与商标诉讼有关的法律文件。