What does PTT stand for?

Enrekang - Language code (ETLW)

Paper Tape Transmission (SAUS)

Paper Tape Typewriter (SAUS)

Parity Test Track (SAUS)

Partial Thromboplastin Time - Hematology

Particle Transport Time (MAE)

Part Task Trainer (MCD)

Party Test - Telecommunications (TEL)

Patellar Tendon Transfer - Medicine (MELL)

Peak Trends Trust - AMEX symbol (NASQ)

Peak Twitch Tension - Physiology

Perforated Tape Transmitter (SAUS)

Perth Theatre Trust - Australia

Petrotex Resources - Vancouver Stock Exchange symbol

Physical Therapist Technician

Platform Terminal Transmitter (SAUS)

Platform Transmitter Terminal - Satellite-based tracking system

Postal, Telegraph, and Telephone Administration (NATG)

Postal, Telephone, and Telegraph

Postes, Telegraphes, et Telediffusion - Post, Telegraph, and Telephone - General Post Office - Facetious translation: Prostitution Telematique et Telephonique - France

Post-Target Turn (SAUS)

Post, Telegraph and Telephone Authority (NITA)

Post, Telephone, and Telegraph - Telecommunications (IAA)

Post Telephone & Telegraph Administration (WDAA)

Post Telephone or Telex (NITA)

Post, Telephone, Telegraph (SAUS)

Post, Telephon und Telegraphenbetriebe - Switzerland - Telecommunications

Post Ten Tumblers - Pseudonym used by William Maginn

Post und Telegraphenverwaltung - Postal and Telegraph Administration - Austria - Telecommunications

Pratt, KS - Location identifier - FAA (FAAL)

Prenegotiated Target Time (SAUS)

Press-to-Talk (IDOE)

Press-to-Test (SAUS)

Press to Transmit

Press-to-Transmit (SAUS)

Pressure Temperature Time (SAUS)

Printing Teletypewriter Telegraphy (VLIE)

Private Tombs at Thebes - Oxford - A publication (BJA)

Processing Telecom Technologies

Production Type Test

Program Technical Training (AFM)

Program Test Tape - Computer science (IEEE)

Protein Truncation Test - Analytical biochemistry

Prothrombin Time - Hematology (AAMN)

Public Telecommunications Trust - Proposed replacement for Corporation for Public Broadcasting

Public Telephone and Telegraph - Military technology (DDF)

Pulmonary Transit Time - Physiology

Pulse Transmission Time - Medicine (DMAA)

Punched Tape Technique (SAUS)

Push to Talk

Push-to-Talk (SAUS)