institucijami
Institucijami is presented as the instrumental plural form related to the Polish noun instytucja, meaning institution. In standard modern Polish, the correct instrumental plural is instytucjami. The form institucijami is typically considered a misspelling or nonstandard variant, though it may occur in informal writing or in non-Polish sources.
Morphology and form: instytucja is a feminine noun. Its plural forms are instytucje (nominative), instytucji (genitive),
Usage: The instrumental plural instytucjami denotes “with institutions” or “by means of institutions” and is used
Etymology and related forms: instytucja derives from Latin institutio through historical Polish development; related words include
See also: Instytucja; Instytucje; Polish grammar; Instrumental case.