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