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Meanings and definitions for PTR
What does PTR stand for? What does PTR mean?
- PTR can refer to:
- Particle Transfer Roller, for cleaning motion picture film
- PetroChina (NYSE: PTR)
- Photothermal Ratio, light/temperature ratio for a plant
- Physikalisch-Technische Reichsanstalt, later Physikalisch-Technische Bundesanstalt, a German research institute
- Pitrilysin, an enzyme
- Planar ternary ring in algebra
- Pool Test Reactor, Canada
- Proton-transfer-reaction mass spectrometry, used in chemical analysis
- PTR rifle, made by PTR Industries, Inc., US
- A type of DNS record in computer networking
- Pleasant Harbour airport (code), United States
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