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