HLOS

AcronymDefinition
HLOSHigh Level Output Specification
HLOSHardware Limited Operation Strategy (cars; failure prevention)
HLOSHigh Level Output Statement (UK Department of Transport)
HLOSHigh Level Operating System
HLOSHospital Length of Stay
HLOSHarpenden Light Operatic Society (UK)
HLOSHypertensive Lower Oesophageal Sphincter