wyjaniajcych
Wyjaniajcych is not a recognized or widely used term in standard Polish. It does not appear in common dictionaries or reference works, and its exact meaning is unclear without additional context. The form may result from a misspelling or a typographical error, or it could be a coined neologism in a specific text or field.
One plausible interpretation is that wyjaniajcych is a misspelling or variant of wyjaśniających, the present participle
Another possible form is wyjawiających, from wyjawiać (to reveal). Wyjawiających would similarly serve as an adjective
If wyjaniajcych is encountered in a text, clarifying the intended root verb and grammatical case is essential