What's the plural form of reinstitutionalization? Here's the word you're looking for.
Answer
The noun reinstitutionalization can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be reinstitutionalization.
However, in more specific contexts, the plural form can also be reinstitutionalizations e.g. in reference to various types of reinstitutionalizations
or a collection of reinstitutionalizations.