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