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