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