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