E.g., when you use 'BAL' to refer to 'Baltimore'-- or even the 'Baltimore Orioles'-- we call 'BAL' an abbreviation. What is 'Baltimore' in this context?
I've yet to find support on Wikipedia for my hunch, that this too is an antecedent. It is a logical antecedent, anyway, if not a grammatical one. But the inspiration for this question comes from a real need for the grammatical term, if one exists. (For my purposes, I really hope it does. "There are only two hard problems in computer science...")