PTT

Noun

• Initialism of professional [[w:technical trainer
• Initialism of [[w:Postal Telephone and Telegraph
• Initialism of platform terminal transmitter
• Initialism of [[w:Tracer use in the oil industry
• Initialism of [[w:Partial thromboplastin time
• Initialism of [[w:Polytrimethylene terephthalate
• Initialism of protein truncation test
• Initialism of part task trainer (See [[w:Flight simulator#Flight simulators and flight training devices

Adjective

• Initialism of {{w}}