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