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