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