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Pruitt–Igoe
Pruitt–Igoe was a large St. Louis public housing complex of 33 eleven-story towers, completed in 1954, designed by Minoru Yamasaki, and demolished beginning in 1972.
Prusa Research
Prusa Research is a Czech 3D printer manufacturer headquartered in Prague, founded by Josef Průša in 2012 and known for the Original Prusa line and Prusament filament.
Prussian blue analogue cathode
A Prussian blue analog cathode is a positive electrode for rechargeable batteries, mainly sodium-ion cells, built on the open cyanide-bridged framework of Prussian blue and made cheaply by aqueous synthesis.
Prussian blue analogue sodium-ion battery
A Prussian blue analogue sodium-ion battery is a rechargeable battery whose cathode is an open-framework Prussian blue analog, prized for low cost, simple synthesis, and rapid charging.
Prussian blue sodium-ion battery
A Prussian blue sodium-ion battery is a rechargeable sodium-ion battery using Prussian blue analog electrodes, offering high power, long cycle life, and low cost but low energy density.
Prussian G 12
The Prussian G 12, also known as the Württemberg G 12, was a German three-cylinder heavy freight steam locomotive, a wartime standard design built from 1917.
Prussian semaphore system
The Prussian semaphore system was an optical telegraph of the Kingdom of Prussia, carrying state and military messages between Berlin and Koblenz from 1833 to 1852.
Prussian state railways
The Prussian state railways, or Preußische Staatseisenbahnen, were the state-owned railways of the Kingdom of Prussia. Expanded by nationalization after 1879, they reached 39,030 km in 1912 and became the Deutsche Reichsbahn in 1920.
Prussian white
Prussian white (Na₂Fe[Fe(CN)₆]) is a sodium iron hexacyanoferrate cathode material for sodium-ion batteries, commercialized by CATL in 2021 at 160 Wh/kg and prized for fast sodium-ion transport and cobalt-free chemistry.
Prutz hydroelectric plant
The Prutz hydroelectric plant in Tyrol, Austria, is the powerhouse of the Kaunertal storage power station, dropping water about 900 meters from the Gepatsch reservoir.
Pryon
Pryon Inc is an American enterprise AI company founded in 2017 by Igor Jablokov, whose Yap speech startup was acquired by Amazon to build Alexa; it sells a RAG platform for enterprise knowledge bases.
Prysmian
Prysmian is an Italian cable manufacturer headquartered in Milan and the market leader in submarine power cables, with about 24 percent of that market in 2025.
PS General Slocum
The PS General Slocum was a wooden sidewheel passenger steamboat, built in Brooklyn in 1891, that burned in the East River on June 15, 1904, killing 1,021 people.
PS Waverley
PS Waverley is a British paddle steamer built on the Clyde in 1946 for the London and North Eastern Railway, the last seagoing passenger-carrying paddle steamer in the world.
PS/2 port
The PS/2 port, named for IBM's Personal System/2 family, is a 6-pin mini-DIN connector for keyboards and mice, introduced in 1987 and still found on some motherboards into the 2020s.
PSA 10
PSA 10, formally PSA Gem Mint 10, is the highest grade on Professional Sports Authenticator's 10-point trading card scale, introduced in July 1991 for virtually perfect cards.
PSA Airlines
PSA Airlines is a wholly owned regional subsidiary of American Airlines Group operating American Eagle flights, founded in 1979 and headquartered in Charlotte, North Carolina, since 2026.
PSA EW/DW engine
The PSA EW/DW engine is a family of petrol (EW) and diesel (DW) engines powering Peugeot and Citroën models like the 307, 407, C4, and C5.
PSA Group
PSA Group, legally Peugeot S.A., was a French multinational automaker that owned Peugeot, Citroën, DS, Opel, and Vauxhall until merging with Fiat Chrysler to form Stellantis in 2021.
PSA International
PSA International is a Singapore-headquartered global container terminal operator descended from the Port of Singapore Authority; it handled 105 million TEUs in 2025 across 45 countries.
PSA PureTech engine
The PSA PureTech engine is a family of three-cylinder petrol engines from PSA Group, launched in 2012 and used across Peugeot, Citroën, DS, and Opel models.
PSA TU engine
The PSA TU engine is a family of small four-cylinder petrol engines developed by PSA Peugeot Citroën, launched in 1986 on the Citroën AX and displacing 954 to 1,587 cc.
PSCAD
PSCAD (Power Systems Computer Aided Design) is a graphical simulation environment for power systems electromagnetic transient studies, serving as the front end to the EMTDC simulation engine.
PSE&G
PSE&G, formally Public Service Electric and Gas Company, is a New Jersey utility delivering electricity and natural gas to about 2.4 million electric and 1.9 million gas customers.
PSE&G Gas System Modernization Program
The PSE&G Gas System Modernization Program is a New Jersey Board of Public Utilities approved program under which PSE&G replaces aging gas mains, running since 2015.
PSEG
Public Service Enterprise Group (PSEG) is a New Jersey utility holding company founded in 1903, operating the state's largest electric and gas utility and nuclear plants.
PSEG Linden generating station
The PSEG Linden generating station is a natural gas-fired combined cycle power plant in Linden, New Jersey, built by PSEG and sold to ArcLight's Alpha Generation in 2021.
PSEG Long Island
PSEG Long Island, a subsidiary of Public Service Enterprise Group, has operated the Long Island Power Authority's electric grid, serving about 1.1 million customers, since 2014.
PSEG Nuclear
PSEG Nuclear is the nuclear subsidiary of New Jersey utility PSEG, operating the Salem and Hope Creek plants, which supply about 40% of the state's electricity.
Pseudo-dynamic testing
Pseudo-dynamic testing is an earthquake engineering method in which inertia and damping are modeled numerically while the restoring force is physically measured from a test specimen, allowing full-scale seismic testing without a shake table.