| Permanent Way | Persistence | Personal property |
| PeacePeace is generally defined as a state of quiet or tranquillity, as an absence of disturbance or agitation (Latin derivation Pax Absentia Belli . Peacemakers (#) are people who have overcome entrenched violence and conflict through their leadership and vis | PessimismPessimism generally, describes a belief that things are bad, and tend to become worse; or that looks to the eventual triumph of evil over good; it contrasts with optimism, the contrary belief in the goodness and betterment of things generally. Philosophic | Peter Wessel ZapffePeter Wessel Zapffe ( December 18 1899- October 12 1990) was a Norwegian author and philosopher. He was born in Tromso and was well known for his somewhat pessimistic view of human existence. His basic thoughts about the error of human existence are prese |
| Permian-Triassic extinction eventThe Permian-Triassic extinction event was an extinction event that occurred approximately 252 million years ago (mya), forming the boundary of the Permian and Triassic periods. It was the Earth's most severe extinction event, with about 90 percent of all | Persian GulfThe Persian Gulf ( Persian: , Arabic: ) is an extension of the Gulf of Oman in between the Arabian Peninsula and Iran. This inland sea of some 233,000 km² is connected to the Gulf of Oman in the east by the Strait of Hormuz, and its western end is marked | PentePente is a board game created in 1978 by Gary Gabrel. It is a slight simplification of the Japanese game of ninuki-renju a variant of gomoku played on a Go board of 19 x 19 intersections with white and black stones. The players alternate in placing stones |
| Personal Communications ServicePersonal Communications Service or PCS is the name for the 1900 MHz radio band used for digital mobile phone services in the United States. CDMA, GSM, iDEN, and TDMA systems can all be used on PCS frequencies. The FCC set aside the band of 1850-1990 MHz f | Personal attackGenerally, a personal attack is committed when a person substitutes abusive remarks for evidence when examining another person's claims or comments. It is considered a personal attack when a person starts referencing a supposed flaw or weakness in an indi | Peter RogetPeter Mark Roget ( January 18, 1779 September 12, 1869) was a distinguished English medical doctor and lexicographer. He created the Thesaurus of English Words and Phrases ( Roget's Thesaurus) a classified collection of related words. See related "Roget, |
| Peptidoglycan | Personal jurisdiction | Pell's equation |
| Peppered moth | Persuasion | Peace process |
| Peyton Randolph | People's Liberation Army Navy | Pembroke College, Cambridge |
| Pelé | Permanent Court of International Justice | Peter Stuyvesant |
| Pelton wheel | Personality psychology | Pelagianism |
| Pendulum clock | Peter David | Peano axioms |
| Pearl Index | Peyote | Persecution of Christians |
| Pet | Pecorino Romano cheese | Peripheral nervous system |
| Peenemünde | Perception | Peggy Lee |
| Perfection of Wisdom | Persons missing after the September 11, 2001 attacks | Peaches |
| Peterhouse, Cambridge | People's Army of Vietnam | Pericles |
| Pearl Harbor | Peter Debye | Peg solitaire |
| Peninsular Malaysia | Period | Permanent Court of Arbitration |
| Peperomia | Pegmatite | Peleus |
| Perpignan | Pension fund losses with Enron | Pepper |
| Peter Tork | Peter Schickele | Performance testing |
| Peckforton Castle | Petrus Peregrinus | Perfectae Caritatis |
| Pennsylvania class battleship | Peritoneum | Performance management |
| Performance measurement period | Periscope antenna | Personal mobility |
| Persikka Interactive | Peanuts | PETN |
| Pendulum | Pension | Peter Minuit |
| Persecution of gays, lesbians, bisexuals, and the transgendered | Peter Bogdanovich | Petri dish |
| Permutation | Perfect matching | Peter I of Russia |
| Peter Weir | Peter Phipps | Pentiti |
| Petra | Peridot | Peace movement |
| Peter III | Peloponnesos | Pentecost |
| Penrose tiling | Pen name | Peter III of Russia |
| Perkin Warbeck | Pea soup | Peering |
| Perch | Peotone, Illinois | Pesticide |
| Pennsylvania Avenue, Washington D.C. | Perlite | Percidae |
| People's Bank of China | Pejorative | People's Party for Freedom and Democracy |
