What's the plural form of flourine? Here's the word you're looking for.
Answer
The noun flourine can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be flourine.
However, in more specific contexts, the plural form can also be flourines e.g. in reference to various types of flourines
or a collection of flourines.
Examples
The equipment is located in the new Sir Bobby Robson Foundation PET Tracer-Production Unit at the university and creates a radioactive marker made from flourine.