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