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