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