What ‘encyclopaedic’ means?

Encyclopaedic means that the dictionary’s entries will not present linguistic facts (grammar, syntactic or stylistic features – as linguistic dictionaries do), but will describe the meaning of the entry words1. So the dictionary will answer the question of how a given word works in an individual languages and what it means, rather than what its linguistic features are.

1 Władysław Miodunka, Podstawy leksykologii i leksykografii, Warszawa 1989, pp. 223, 252.