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