Audio Response Unit
Alarm Relay Unit
Automated Response Unit
Accredited Residential Underwriter
Acoustical Resistance Unit
Activation Request Upstream
Address Recognition Unit
Attitude Reference Unit
Abnormal Release User
Access/Relay Unit
acid recovery unit
Acknowledge Receipt and Understanding
acute retention of urine
Air Removal Unit
Airborne Radar Unit
Aircraft Repair Unit
Alcohol Rehabilitation Unit
American Railway Union
ammonia recovery unit
Analog Radio Unit
Anglia Ruskin University
Application Resource Unit
Arithmetic Unit
Army Reserve Unit
arthritis rehabilitation unit
asbestos reporting unit
Associate reserve Unit
Audio Response Units
Automatic Response Unit
IATA code for Aracatuba Airport, Araça…