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