operacjami
Operacjami is the instrumental plural form of the Polish noun operacja, meaning an operation or set of actions. In Polish, operacja covers meanings such as a surgical procedure, a mathematical or computational sequence of steps, or a planned series of activities within a process. The form operacjami is used when describing the means, method, or instrument by which something is done, in contexts that require the instrumental case and plural.
Morphology and usage notes: operacja is feminine and follows the typical declension pattern of -acja nouns.
Etymology and related forms: operacja derives from Latin operatio, via French opération, entering Polish as operacja.
In summary, operacjami is the plural instrumental form of operacja, used to indicate the means or methods