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