Which of the following is ALT
ALT Alternative (USENET newsgroup prefix)
ALT Alternate
ALT Altitude
ALT Alto
ALT Alteration
ALT Alternating
ALT Association for Learning Technology
ALT Alanine Aminotransferase
ALT Altimeter
ALT Algorithmic Learning Theory (Conference)
ALT Radar Altimeter (SEASAT, GEOS-3)
ALT Adult Learning and Teaching (degree program)
ALT Assistant Language Teacher
ALT Argon Laser Trabeculoplasty
ALT Alternative
ALT Adaptive Lighting Technology
ALT Analogue Loopback Transfer
ALT Automated Loop Test
ALT Altoona Transportation Center (Amtrak station code; Altoona, PA)
ALT Alanine Amino Transferase (medical)
ALT Advanced Learning Technologies
ALT Acquisition, Logistics, and Technology (US Army)
ALT Accelerated Life Testing
ALT Applied Laser Technology (various locations)
ALT Alternative Lengthening of Telomeres (cells)
ALT Accelerated Life Test
ALT Altus AFB (Altus, OK)
ALT Approach and Landing Test
ALT Assistant Leader Trainer
ALT Acquisition Lead Time
ALT Association for Linguistic Typology
ALT Allocation Logement Temporaire (French: Temporary Housing Allowance)
ALT Aboriginal Lands Trust (Department of Indigenous Affairs)
ALT Alliance for Lobbying Transparency (UK)
ALT Administrative Lead Time
ALT Airsoft Lunel Team (French Airsoft group)
ALT Anarchists, Lunatics and Terrorists (apocryphal origin of newsgrouphierarchy)
ALT Anti Leech Tracker
ALT Achievement Level Test
ALT Approximate Lower Triangular (coding scheme)
ALT Association for Local Telecommunications
ALT Army Liaison Team
ALT Amarillo Little Theatre (Amarillo, TX)
ALT Associazione per la Lotta Alla Trombosi e Alle Malattie Cardiovascolari(Italian: Association to Combat Thrombosis and Cardiovascular Disease;est. 1986)
ALT Automatic Link Transfer
ALT Airborne Laser Tracker
ALT Advanced Lightning Technology
ALT Aer Lingus Teoranta
ALT Automatic Line Testing (Nortel)
ALT Alanina Amminotrasferasi (Italy)
ALT Active Leap Technology
ALT ATM Link Termination
ALT Analog Line Termination
ALT Associazione Italiana per la Lotta Alla Trombosi
ALT All Legal Transitions
ALT Asynchronous Line Test
ALT Alarms and Telemetry (Sprint)
ALT Automatic Line Thresholded
ALT Aljamiado Learning Technologies (est. 2001)
If you intend to use abbreviations please please state what you are abbreviating in full instead of just the abbreviation, we are not all as sharp as we were.