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