Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

|Fewer Letters|More Letters| |-------|---------|---| |FAR|Federal Aviation Regulations| |JWST|James Webb infra-red Space Telescope| |SLS|Space Launch System heavy-lift|

^(3 acronyms in this thread; )^(the most compressed thread commented on today)^( has 38 acronyms.)
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