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

Fewer Letters	More Letters
FTS	Flight Termination System
LOX	Liquid Oxygen
SECO	Second-stage Engine Cut-Off
SES	Formerly Société Européenne des Satellites, comsat operator
~	Second-stage Engine Start
USSF	United States Space Force

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