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A retronym (a portmanteau of retro- (before) and acronym)

is a new name for an existing term
usually to help distinguish it when more variants were introduced
Most of these are not abbreviations (other -nyms rae)
for example
conventional oven, when the microwave oven was introduced
live music, when recording came around
meatspace, when cyberspace was coined
there used to be just one ATA connector for hard drives. Then a smaller, 'Serial ATA' was introduced, so we decided to call the older, parallel one Parallel ATA (PATA)
a bunch of these are specific enough to be jargon