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