What's the plural form of anno Domini? Here's the word you're looking for.
Answer
The noun anno Domini can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be anno Domini.
However, in more specific contexts, the plural form can also be annis Domini(of multiple years or of a date range) e.g. in reference to various types of annis Domini
or a collection of annis Domini.
