All articles starting with P
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Pythonidae
Pythonidae, the true pythons (formerly Pythoninae), is an Old World family of non-venomous egg-laying constrictor snakes from Africa, Asia, New Guinea, and Australia, with 40 species, lengths up to 10 m, and Eocene European fossils indicating a Laurasian origin.
PyTorch
PyTorch is an open-source Python library for tensor computation with GPU acceleration and deep neural networks, launched in January 2017 and now a primary platform for AI research.
PyTorch Lightning
PyTorch Lightning, installable as the lightning package, is an open-source PyTorch wrapper whose Trainer automates training loops, logging, and scaling from 1 to thousands of GPUs.
Pyu Ancient Cities
Pyu Ancient Cities: UNESCO World Heritage serial site (2014, Myanmar's first) of three brick, walled, moated cities, Halin, Beikthano, Sri Ksetra, in the Ayeyarwady dry zone, built by the Pyu Kingdoms from 200 BC to AD 900, earliest Buddhist urban civilization in Southeast Asia.
Pyu script
The Pyu script is a Brahmi-derived writing system used in Upper Myanmar from roughly the 2nd to the early 12th century to write the extinct Sino-Tibetan Pyu language.
Pyura chilensis
Pyura chilensis (piure), a solitary ascidian sea squirt of the southeast Pacific from Peru to southern Chile; rock-like red-fleshed filter feeder, hermaphroditic, harvested by Chilean artisanal fishers as seafood.
Pyuria
Pyuria, also called leukocyturia, is white blood cells in the urine, a marker of urinary tract inflammation. Sterile pyuria is persistent pyuria with negative bacterial culture, caused by recent antibiotics, atypical infections, or systemic disease.
Pyxis
Pyxis is a small southern constellation, the mariner's compass, created by French astronomer Nicolas-Louis de Lacaille in the 18th century and now one of the 88 official constellations.
Pyxis of al-Mughira
The Pyxis of al-Mughira is a carved ivory cylindrical box made in 968, probably at Madinat al-Zahra near Córdoba, as a gift for the young prince al-Mughira.
Pyxis Oncology
Pyxis Oncology is a clinical-stage biotechnology company developing antibody-drug conjugates for cancer, launched in 2019 by Longwood Fund and traded on Nasdaq as PYXS; its lead candidate, micvotabart pelidotin, targets head and neck cancer.
Pyypl
Pyypl, pronounced "people," is a fintech company founded in 2017 by Antti Arponen and Phil Reynolds, offering prepaid cards and remittances without a bank account.
PZ Tel
PZ Tel, also cataloged as HD 174429, is a young G9 pre-main-sequence star in Telescopium, about 51.5 parsecs away, hosting the directly imaged brown dwarf PZ Tel B.
Pz'
Pz' (Papayusupha Goree Njie, born 2003) is an Atlanta rapper and Wilhelmina-signed model of Gambian-Senegalese descent, member of the ØWay collective, breakout via "Hedis Bussin'" and Playboi Carti's #freepz co-sign, debut mixtape No Turning Back (June 2026).
PZL M-15 Belphegor
The PZL M-15 Belphegor, also known as the PZL-Mielec M-15, was a jet-powered crop-spraying biplane built in Poland, the only production jet biplane ever made.
PZL M28 Skytruck
The PZL M28 Skytruck, also known as the PZL M-28, is a Polish twin-engine turboprop STOL utility transport, a Westernized development of the Antonov An-28.
PZL Mielec
PZL Mielec, also known as WSK-Mielec, is a Polish aircraft and helicopter manufacturer in Mielec, Poland, known for the M28 aircraft and S-70i Black Hawk helicopter.
PZL P.11
The PZL P.11 was a Polish fighter aircraft of the 1930s, the main fighter of the Polish Air Force during the German invasion of September 1939.
PZL TS-11 Iskra
The PZL TS-11 Iskra is a Polish two-seat jet trainer, the first Polish jet aircraft, which first flew in 1960 and served the Polish Air Force for over half a century.