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