notarial actglossary / NOTARIAL ACT notarial act. An official function of a notary public, such as placing a seal on an affidavit. See NOTARY PUBLIC. [Cases: Notaries6. C.J.S. Notaries §§ 11, 15, 17.] 词条贡献者 双语律师Philipp,国际知名法学院法律专业,擅长翻译各类与医疗保健相关诉讼相关的法律文件。