The meaning of the Acronym MTA is...

MTA is

• Mineral Tri-oxide Aggragate

More Meanings For MTA:

• Message Transfer Agent
• Multi Threaded Architecture
• Milestones Trend Analysis
• Modem Telephony Agent
• Media Terminal Adapter
• Mail Transfer Agent
• Microsoft Transaction Application Programming Interface
• Model Turned Artist
• Motherfucking Transit Assholes
• Mother Thrice Admirable
• Mayor Traveling Abroad
• Mineral Trioxide Aggregate
• Materials Testing Accelerator
• Multiple Threaded Apartment
• Moving Treasury Average

MTA is also in:

• Adults
• Awards & Medals
• Chat
• Funnies
• General
• Hardware
• Software
• Unfiled