securities actglossary / SECURITIES ACT securities act. A federal or state law protecting the public by regulating the registration, offering, and trading of securities. See SECURITIES ACT OF1933; SECURITIES EXCHANGE ACT OF1934; BLUE-SKY LAW. 词条贡献者 双语律师Wayne,国际知名法学院法律专业,擅长翻译各类与遗产及遗嘱争议相关的法律文件。