PTR can refer to:
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Particle transfer roller, for cleaning motion picture film
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Peak-to-trough ratio, a parameter in pharmacokinetics
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Petir LRT station (LRT station abbreviation), Singapore
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PetroChina
PetroChina Company Limited () is a Chinese oil and gas company and is the listed arm of state-owned China National Petroleum Corporation (CNPC), headquartered in Dongcheng District, Beijing. The company is currently Asia's largest oil and ga ...
(NYSE: PTR)
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Photothermal Ratio, light/temperature ratio for a plant
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Physical transmission right in the electricity market
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Physikalisch-Technische Reichsanstalt, later Physikalisch-Technische Bundesanstalt, a German research institute
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Pitrilysin, an enzyme
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Planar ternary ring
In mathematics, an algebraic structure (R,T) consisting of a non-empty set R and a ternary mapping T \colon R^3 \to R \, may be called a ternary system. A planar ternary ring (PTR) or ternary field is special type of ternary system used by Marsha ...
in algebra
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Pool Test Reactor, Canada
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Proton-transfer-reaction mass spectrometry
Proton-transfer-reaction mass spectrometry (PTR-MS) is an analytical chemistry technique that uses gas phase hydronium ion, hydronium reagent ions which are produced in an ion source. PTR-MS is used for online monitoring of Volatile organic compoun ...
, used in chemical analysis
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PTR rifle, made by PTR Industries, Inc., US
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A type of DNS record in computer networking
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Pointer in computer programming (e.g. the PTR keyword in x86 assembly language)
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Palanivel Thiagarajan
Dr. Palanivel Thiagarajan (PTR) (born 7 March 1966) is an Indian politician and the current Minister of Information Technology and Digital Services of Tamil Nadu. He was elected to the Tamil Nadu Legislative Assembly election in 2016 and 2021 ...
, an Indian politician
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Puerto Rico
; abbreviated PR), officially the Commonwealth of Puerto Rico, is a Government of Puerto Rico, self-governing Caribbean Geography of Puerto Rico, archipelago and island organized as an Territories of the United States, unincorporated territo ...
, ITU country code
* Public Test Realm, a server in ''
Overwatch
''Overwatch'' (abbreviated as OW) is a multimedia franchise centered on a series of multiplayer first-person shooter (FPS) video games developed by Blizzard Entertainment. ''Overwatch (video game), Overwatch'' was released in 2016 with a success ...
'' where updates are tested by developers for player feedback
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PaRappa the Rapper
is a rhythm video game developed by NanaOn-Sha and published by Sony Computer Entertainment for the PlayStation. It was originally released in Japan in 1996 and worldwide in 1997. Created by music producer Masaya Matsuura in collaboration w ...
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