This article examines the changing forms of headwords in the partial differentiation of encyclopedias away from dictionaries from the late seventeenth century to the late nineteenth century. In the past, this differentiation has mostly been studied as a process of reducing lexical content in encyclopedias and reducing encyclopedic content in dictionaries, but it also manifested itself in the grammatical forms of allowable headwords. Specifically, proto-encyclopedias of the seventeenth and eighteenth centuries tended to accept verbs and adjectives as headwords, whereas many general encyclopedias from the mid-nineteenth century onward virtually eliminated any headwords except nouns. Here I point to three causes for this development in encyclopedias’ headwords: an influx of historical material as general encyclopedias acquired their modern scope, a de-emphasis on terminology and technolects in favor of coverage of concepts, and a rising concern for standardization and making it easier for readers to find what they wanted.

中文翻译：

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名词的动词和形容词：17 世纪末到 19 世纪末百科全书中词条的演变

本文考察了 17 世纪末到 19 世纪末百科全书与词典的部分分化中词条形式的变化。过去，这种分化多被研究为百科全书词汇内容减少和词典百科内容减少的过程，但它也表现在允许词条的语法形式上。具体来说，17 世纪和 18 世纪的原始百科全书倾向于接受动词和形容词作为词条，而 19 世纪中叶以后的许多通用百科全书实际上删除了除名词以外的任何词条。在这里，我指出了百科全书词条发展的三个原因：随着通用百科全书获得现代范围，历史材料大量涌入，