定义是对于一种事物的本质特征或一个概念的内涵和外延的确切表述。定义最基本、最常用的是邻近属概念加种差的方法。邻近属概念是指包含了一个概念全部外延的与该概念最相近的概念,种差则是指同一邻近属概念下的种概念之间的本质差别。定义的定义项又必须遵守与被定义项相应相称、不能直接或间接包含被定义项、清楚确切、一般不能用否定形式的规则。明确“公证”这一概念,下定义是最好的途径。定义就必须使用定义的方法、遵守定义的规则,才能真正揭示出“公证”所反映的对象的本质属性。《中华人民共和国公证暂行条列》第2条所规定的“公证是国家公证机关根据当事人的申请,依法证明法律行为、有法律意义的文书和事实的真实性、合法性,以保护公民身份上、财产上的权利和合法利益”是法律上的公证定义。根据这一法律定义,也有人在著书立说中这样作公证定义:“公证是指国家专门设立的公证机构根据法律的规定和当事人的申 Definition is an exact description of the essential characteristics of a thing or the connotation and extension of a concept. The definition of the most basic, most commonly used is the concept of proximity to the plus plus poor method. The concept of proximity refers to the concept that contains the most similar extension of a concept, and the difference of species refers to the essential difference between concepts under the same proximity. Defined definitions must, in turn, comply with the rules that are commensurate with the definition of the item to be defined, that can not be directly or indirectly defined, clearly and generally not in the negative. Clear ”notary “ this concept, the definition of the best way. The definition must use the definition of the method, to comply with the rules of definition, in order to truly reveal ”notarization “ reflects the essential attributes of the object. Article 2 of the ”Provisional Rules for Notarization of the People’s Republic of China“ stipulates that ”a notarization is the authenticity and legality of notarized legal documents and factual facts of a notarized office of the state notarial office based on the application of the parties, as well as the protection of citizenship On the property rights and legitimate interests “is a legal notarized definition. According to this legal definition, there are also some people who make the notarized definition in the book writing: ”Notarization means that a notarized institution set up by the state according to the law and the party concerned