What's the plural form of spirantization? Here's the word you're looking for.
Answer
The noun spirantization can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be spirantization.
However, in more specific contexts, the plural form can also be spirantizations e.g. in reference to various types of spirantizations
or a collection of spirantizations.
Examples
Voicing and spirantization of stops emerged later, taking different forms in different languages.