The meaning of the Acronym TOS is...

TOS is

• Transfer Orbit Stage
• Test Operating System

More Meanings For TOS:

• Top Of the Stack
• Top Of Stack
• Atari S T Self-extracting file archive file
• Teraflop Operating System
• Type of Service
• Trusted Operating System
• ToasterOS (Operating System)
• Type of Service
• Testing Operation System
• Terms Of Service
• Time Of Service
• Temporarily Out Of Service
• TIROS Operational System
• Tasteless Offensive Stupidity
• The Other Side

TOS is also in:

• Adults
• Assembly
• File Extensions
• General
• Networking
• Ocean Science
• Security
• Software
• Telecom
• Unfiled