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