The meaning of the Acronym ALS is...

ALS is

• Alton and Southern Railway Company

More Meanings For ALS:

• Alias - Vivid RayTracer file Bitmap graphics
• Application Layer Structure
• Automatic Line Switching
• Action Logic System
• Accounts Ledger System
• Alternative Line Service
• Architectural License Seminar
• Advanced Light Source
• Advanced Low-power Schottky
• Airborne Laser Survey
• Automated Library System
• Alternate Light Source
• All Ladies Shaved
• Advanced Leader Silver
• Advanced Life Support

ALS is also in:

• Architecture
• Electronics
• File Extensions
• Funnies
• General
• Geology
• Hospitals
• Libraries
• Ocean Science
• Software
• Telecom
• Toastmasters