义项是指字词典中同一个字条下按其意义分列的项目。同一个字条下的这些项目分别是对该字的一种解释,而且应是各自具有不同于他项目的区别特征,否则就没有必要另立一项。假如某一个义项与其所隶属的字头相同,则该义项不构成对字头的任何解释。这种义项可以称之为假义项或零 Sentences refer to the items listed in the same dictionary under the same meaning in the dictionary. These items under the same Article are an explanation of the word respectively, and they should each have distinctive features different from those of his item. Otherwise, there is no need for a separate item. If a meaning is the same as the prefix to which it belongs, the meanings do not constitute any explanation of the prefix. This kind of meaning can be called hypothetical term or zero