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