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