u/s


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AcronymDefinition
u/sUltrasound
u/sUpstream (Process Engineering)
u/sUnderside
u/sUnsatisfactory
u/sUpstage
u/sUnserviceable
u/sUnderstudy (theater)
u/sUnder Saddle (equestrian term for a show class that doesn't include jumping over fences)
u/sUser/Station