The book ('The Dictionary of Time: 300 Words for 300 Weeks') was created based on the Word of the Week column (Beseda tedna), which has been since 2019 appearing weekly in the newspaper Delo. The column is authored by researchers from the Fran Ramovš Institute of the Slovenian Language, the Research Centre of the Slovenian Academy of Sciences and Arts. Contributions have been made by 47 experts from the central institution for Slovene language research, home to the iconic Dictionary of Standard Slovenian Language, as well as the dictionary portals Fran, Franja, and Franček, along with orthographic, dialectological, terminological, etymological, and other research work.

The Dictionary of Time connects researchers, users, and the language community. The word descriptions in the book combine scientific accuracy with the personal writing styles of the authors. The monograph thus presents a document of the times – an image of the Slovene language between 2019 and 2025 – and simultaneously reflects contemporary linguistic phenomena and social changes through 300 carefully selected words.

Published on the occasion of the institute's eightieth anniversary, the book combines the original word descriptions with several accompanying texts containing diverse and interesting information. It also offers brief explanations of important lexicographic terms, alongside a concise history of the Fran Ramovš Institute of the Slovenian Language, an introduction to lexicography, and an outline of the history of Slovenian dictionaries, grammars, and orthographies.