The meaning of the Acronym TT is...

TT is

• Tough Titty
• Two Tits
• Tiny Tits

More Meanings For TT:

• Teletype Text
• Typewriter Text
• Trouble Ticket
• Transverse Traceless
• TeleType
• Techno Terminal
• Time-Tagged
• Tiny Telephone
• Text Telephone
• Touch Tone
• Top This
• Terrible Twins
• Totally Terrific
• Thermal Transfer
• Test Tube

TT is also in:

• Assembly
• Chat
• Chemistry
• General
• Hardware
• Security
• Telecom