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