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