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