PTT
WiktionaryText
PTT
- Push to talk; Press to transmit.
- Part Task Trainer (See Flight simulator#Flight simulators and flight training devices at Wikipedia
- Partial thromboplastin time
- Partitioning tracer test
- Platform Terminal Transmitter
- Postal Telephone and Telegraph
- Professional Technical Trainer
- Protein truncation test
- Polytrimethylene terephthalate