EN
In this article we have made multi-faceted description of a dictionary - its macro- and microstructure,purpose, scope and form of the dictionary’s lexicon. Our next task was to define basictypological features of the dictionary. We selected two the most appropriated typologies - one, ofUkrainian linguist, V. Dubichinsky’s and the second one, of a Polish dialectologist, H. Karas. As aresult of the analysis, we found that the classification of the dictionary is not possible due tovariety of Russian Old Believers’ insular dialect surrounded by foreign languages (Polish andGerman as well). Our study confirms an enormous value of the dictionary because of its richillustrative material, as well as the speech of three generations from the three Polish Old Believers’centers: Suwalki-Sejny, Augustow and Mazury which was fixed in it.