The study describes the academic encyclopedias of Ukraine. The main attention is paid to the peculiarities of the development of the encyclopedia publishing at the National Academy of Sciences of Ukraine: its origins and the most important academic encyclopedias are outlined. The spectrum of encyclopedic projects is analyzed by the scientific branches and the conclusion is drawn about the significant advantage of social sciences and humanities over others in the contex of presenting knowledge in encyclopedic format. Some vision of further development of the encyclopedia publishing in Academy is proposed.

The research is devoted to issues of the ecosystem of encyclopedic knowledge. The fact is that a reference information is now increasingly used as means of media manipulation in level of public consciousness (for political, ideological, and economic reasons). This is well traced on the example of online encyclopedias with free access to editing of posted information such as Wikipedia. This article is based on the description of the online analytical report on encyclopedias in Europe written by experts of the European Parliament.

The peculiarities of the development of some scientific disciplines (such as mining, geology), primarily the professional terminology system are shown on the example of the project The Mining Encyclopedia (ukr .: Hirnycha Entsyklopediia). The study describes The Mining Encyclopedia, its relevance for technical education in Ukraine, as well as for the integration of national higher education in the European and world educational space in general.

The article describes the phenomenon of the electronic encyclopedia activity and investigates the electronic Internet encyclopedias created by the institutions of the National Academy of Sciences of Ukraine. It has been discovered that electronic encyclopedias can be divided into several varieties, the main of which is online encyclopedias, which are highly distinguished in comparison with classical printed publications by the characteristics caused by the development of information technology. In accordance with this division, the national academic encyclopedic resources are characterized in the article. The idea of the importance of creating an online encyclopedia about the National Academy of Sciences of Ukraine is presented; it also argued that current online encyclopedias are not fully equipped with a wide range of technological opportunities for their use.

Glossary for encyclopedistics is proposed. The main terms and definitions of the discipline are given.

A brief highlight of the main events of encyclopedic life in Ukraine for 2019 is given.