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