inynierskie
Inynierskie is not a standard Polish term. In common usage it is likely a misspelling or typographical variant of the adjective inżynierskie, which means engineering-related or connected with engineers. When encountered, the form without diacritics (inynierskie) should be treated as incorrect in formal writing.
The correct form derives from the noun inżynier (engineer) and the adjectival suffix -ski. The noun inżynier
Inżynierskie is used in a range of contexts in Polish, including education, industry, and professional discourse.
When encountering the nonstandard form inynierskie, readers should treat it as a typographical or orthographic error