| Pythagorean theorem | Pythagoras | Python |
| Pythonidae7, see text. Pythonidae is a family of constricting snakes, sometimes classified as an subfamily of Boidae. Pythons are found in Australasia, Southeast Asia, India, and Africa. They range in size between 0. Some show vivid patterns on their scales while o | PytheasPytheas (c. 310 BC) was a Greek merchant, geographer and explorer from the Phocaean colony Massilia (today Marseille). He made a voyage of exploration to northwestern Europe around 325 BC. He traveled over a considerable part of Britain, circumnavigating | PyrimidinePyrimidine is an organic compound, a conjugated amine which is similar to benzene, but with a heterocyclic ring: two nitrogen atoms taking the place of carbon atoms at positions 1 and 3 relative to each other around the six-member ring. Three bases of the |
| PyramidThis is about the polyhedron. For information on the pyramids of Egypt, see Egyptian pyramids. Geometric shape ''formed by connecting a polygonal base A pyramid is a geometric shape formed by connecting a polygonal base and a point called the apex, by tri | Python programming languagePython is an interpreted, interactive programming language created by Guido van Rossum in 1990, originally as a scripting language for Amoeba OS capable of making system calls. Python is often compared to Tcl, Perl, Scheme, Java and Ruby. Python is develo | PyridinePyridine is one of the simplest heterocyclic aromatic molecules, with the Hill system formula C H N. Pyridine is structurally similar to benzene, with a single nitrogen atom substituting in the six-member aromatic ring for one of the carbon and one of the |
| PyxisPyxis (the compass) is a minor southern constellation introduced by Nicolas Louis de Lacaille under the name Pyxis Nautica''. It is perhaps supposed to represent the compass of Argo Navis, though the Argo could hardly have had a compass, as the ancient Gr | Pythagorean tripleA Pythagorean triple consists of three positive integers a b c such that a''2 + b''2 c''2. The name comes from the Pythagorean theorem, which states that any right triangle with integer side lengths yields a Pythagorean triple. The converse is also true: | Pyotr Ilyich TchaikovskyPyotr Ilyich Tchaikovsky ( Russian ́ ́ sometimes transliterated as Piotr Anglicised as Peter Ilich , ( May 7, 1840 November 6, 1893 ( N. April 25, 1840 October 25, 1893 ( O. was a Russian composer of the Romantic era. Although not a member of t |
| Pyrenees | Pythagorean tuning | Pyrite |
| Pylos | Pyongyang | Pyramid scheme |
| Pygmy Hippopotamus | Pygmalion | Pyrrolysine |
| Pyramidal orchid | Pyramus and Thisbe | Pyrrha |
| Pythian Games | Pylades | Pyrometer |
| Pyruvic acid | Pyrrhus | Python (mythology) |
| Pythias | Pygmalion of Tyre | Pyrénées-Atlantiques |
| Pygmy mythology | Pyrophosphate | Pyatt, Arkansas |
| Pyroxene | Pyramid of Djoser | Pymatuning Central, Pennsylvania |
| Pymatuning North, Pennsylvania | Pymatuning South, Pennsylvania | Pymatuning Township, Pennsylvania |
| Pyrénées-Orientales | Pyote, Texas | Pyrrho |
| Pyrochlore | Pyrros Dimas | Pyroelectricity |
| Pyrokinesis | Pyruvate | Pyrgi Tablets |
| Pythagorean comma | Pyrrole | Pyrrhic |
| Pythagoreans | Pyrrhic victory | Pyrrhus of Epirus |
| Pyroclastic flow | Pyrrhocorax | Pyhäjärvi |
| Pyrenean Mountain Dog | Pygmy parrot | Pyromania (album) |
| Pyromania | Pyrolysis | Pyromancy |
| Pyrethrum | Pyrenean | Pyrénée |
| Pygmy | Pythagoreanism | PY |
| Pyro (comics) | Pyotr Leonidovich Kapitsa | Pyroto |
| Pyrgos | Pythagorean expectation | Pyrex |
| Pygmy Right Whale | Pygopodidae | Pyrgos (disambiguation) |
| Pyramids (Discworld) | Pygopus | Pykrete |
| Pygomeles | Pyroclastic | Pyotr Klimuk |
| Pyonghwa Motors | Pyrzyce | Pybba of Mercia |
| Pyramid Lake | Pyramid (game show) | PYY 3-36 |
| PySol | Pysanka | Pyskowice |
| Pyeongchang County | Pyrotechnic | Pyroclastic rock |
| Pyrenoid | Pygmy Killer Whale | Pyroclastic surge |
| Pyandj | Pyracantha | Pyramid Technology |
