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