Though political discourse is in the mainstream of modern studies, scholars haven’t so far paid much attention to compiling political discourse-oriented dictionaries. The need to further develop lexicographic theory and practice for specific purposes and advance new methods to dictionary making is a challenge that linguists are facing today. The aim of the case study is twofold: to work out the principles for making an Explanatory Combinatorial Dictionary (ECD) of English political conflict lexis and the microstructure of an ECD entry. The source of the data is the NOW corpus; the material is current American political discourse (2022). The ECD is generally consistent with Mel'čuk’s Meaning-Text theory (MTT). The authors describe a process of collecting and processing the data: corpus search and analysis, automatic and manual text processing, glossary compilation with the use of lexicographic, semasiological, and etymological methods and present an example of an ECD entry consisting of semantic, phonological, and cooccurrence zones. The findings prove that the use of electronic text corpora offers an effective way for compiling a specialized discourse-based dictionary. The research illustrates the validity of MTT: though based on the data of “language in context” , the dictionary is synthesis-oriented: it aims at speech production. The paper is the first result of a bigger project sketching the overall framework of the discursive ECD of political conflict lexis, which subsequent studies will hopefully develop with more precision and detail. The dictionary will be helpful for scholars in linguistics, discourse analysis, media and communication, political science, and conflict studies.