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