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