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