• Pacific Time zone
  Pacific Time Zone
  The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time . The clock time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory. During daylight saving time, its time offset is UTC-7.In the United States...
  
  
• Pro tempore
  Pro tempore
  Pro tempore , abbreviated pro tem or p.t., is a Latin phrase which best translates to "for the time being" in English. This phrase is often used to describe a person who acts as a locum tenens in the absence of a superior, such as the President pro tempore of the United States Senate.Legislative...
  
  , a Latin phrase "for the time being"/temporary
• Physical Training
  Physical education
  Physical education or gymnastics is a course taken during primary and secondary education that encourages psychomotor learning in a play or movement exploration setting....
  
  , an abbreviation in the United States military

Units

• Pt., an abbreviation for Point
  Point (typography)
  In typography, a point is the smallest unit of measure, being a subdivision of the larger pica. It is commonly abbreviated as pt. The point has long been the usual unit for measuring font size and leading and other minute items on a printed page....
  
  , a unit of measure used in typography
• Pt., an abbreviation for Pint
  Pint
  The pint is a unit of volume or capacity that was once used across much of Europe with values varying from state to state from less than half a litre to over one litre. Within continental Europe, the pint was replaced with the metric system during the nineteenth century...
  
  , a unit of volume or capacity
• Pt., an abbreviation for Point or Promontory
  Promontory
  Promontory may refer to:*Promontory, a prominent mass of land which overlooks lower lying land or a body of water*Promontory, Utah, the location where the United States first Transcontinental Railroad was completed...
  
  
• pt
  Card stock
  Card stock, also called cover stock or pasteboard, is a paper stock that is thicker and more durable than normal writing or printing paper, but thinner and more flexible than other forms of paperboard. Card stock is often used for business cards, postcards, playing cards, catalog covers,...
  
  , a measurement in the print industry for thickness of card stock

Medicine

• pt, Patient
  Patient
  A patient is any recipient of healthcare services. The patient is most often ill or injured and in need of treatment by a physician, advanced practice registered nurse, veterinarian, or other health care provider....
  
  , a medical abbreviation
• PT, Physical Therapy
  Physical therapy
  Physical therapy , often abbreviated PT, is a health care profession. Physical therapy is concerned with identifying and maximizing quality of life and movement potential within the spheres of promotion, prevention, diagnosis, treatment/intervention,and rehabilitation...
  
  
• Pararosaniline
  Pararosaniline
  Pararosaniline, Basic Red 9, or C.I. 42500 is a magenta dye having chemical formula 19183. It is one of the four components of basic fuchsine. Pararosaniline, which is sold as a single dye, may make the best Schiff's reagent...
  
   - Toluidine
  Toluidine
  There are three isomers of toluidine, which are organic compounds. These isomers are o-toluidine, m-toluidine, and p-toluidine. The o- stands for ortho- , m- stands for meta- , and p- stands for para-...
  
   histological stain
• Percutaneous
  Percutaneous
  In surgery, percutaneous pertains to any medical procedure where access to inner organs or other tissue is done via needle-puncture of the skin, rather than by using an "open" approach where inner organs or tissue are exposed .The percutaneous approach is commonly used in vascular procedures...
  
   surgery
• Prothrombin time
  Prothrombin time
  The prothrombin time and its derived measures of prothrombin ratio and international normalized ratio are measures of the extrinsic pathway of coagulation. This test is also called "ProTime INR" and "INR PT". They are used to determine the clotting tendency of blood, in the measure of warfarin...
  
  , a measurement of blood coagulation

Diseases

• Mitochondrial permeability transition
  Mitochondrial permeability transition pore
  The Mitochondrial Permeability Transition, or MPT, is defined as an increase in the permeability of the mitochondrial membranes to molecules of less than 1500 Daltons in molecular weight. MPT results from the opening of a mitochondrial permeability transition pore, also known as the MPT pore or MPTP...
  
  , a loss of impermeability of the membranes of mitochondria that occurs under some pathological conditions such as traumatic brain injury
• Pulmonary Hypertension
  Pulmonary hypertension
  In medicine, pulmonary hypertension is an increase in blood pressure in the pulmonary artery, pulmonary vein, or pulmonary capillaries, together known as the lung vasculature, leading to shortness of breath, dizziness, fainting, and other symptoms, all of which are exacerbated by exertion...
  
  
• Phyllodes tumor
  Phyllodes tumor
  Phyllodes tumors , also cystosarcoma phyllodes, cystosarcoma phylloides and phylloides tumor, are typically large, fast growing masses that form from the periductal stromal cells of the breast...
  
  , a rare breast tumor

Chemistry

• Platinum
  Platinum
  Platinum is a chemical element with the chemical symbol Pt and an atomic number of 78. Its name is derived from the Spanish term platina del Pinto, which is literally translated into "little silver of the Pinto River." It is a dense, malleable, ductile, precious, gray-white transition metal...
  
  , a chemical element
• Periodic Table
  Periodic table
  The periodic table of the chemical elements is a tabular display of the 118 known chemical elements organized by selected properties of their atomic structures. Elements are presented by increasing atomic number, the number of protons in an atom's atomic nucleus...
  
  
• Polythiophene
  Polythiophene
  Polythiophenes result from the polymerization of thiophenes, a sulfur heterocycle, that can become conducting when electrons are added or removed from the conjugated π-orbitals via doping....
  
  , a molecule

Physics

• Pt is the symbol, in Particle Physics
  Particle physics
  Particle physics is a branch of physics that studies the existence and interactions of particles that are the constituents of what is usually referred to as matter or radiation. In current understanding, particles are excitations of quantum fields and interact following their dynamics...
  
   formulae, for the transverse momentum (the momentum that is perpendicular to the beamline of a particle detector)

Geology

• Pressure and temperature, often used in the phrase "PT conditions" in reference to metamorphism
  Metamorphism
  Metamorphism is the solid-state recrystallization of pre-existing rocks due to changes in physical and chemical conditions, primarily heat, pressure, and the introduction of chemically active fluids. Mineralogical, chemical and crystallographic changes can occur during this process...
  
  .

Engineering

• Post-tensioned concrete
  Prestressed concrete
  Prestressed concrete is a method for overcoming concrete's natural weakness in tension. It can be used to produce beams, floors or bridges with a longer span than is practical with ordinary reinforced concrete...
  
  , a reinforcement method used by structural engineers
• Pressure treated
  Wood preservation
  All measures that are taken to ensure a long life of wood fall under the definition wood preservation . Apart from structural wood preservation measures, there are a number of different preservatives and processes that can extend the life of wood, timber, wood structures or engineered wood...
  
  , a type of wood

Botany And Forestry

• Petunidin
  Petunidin
  Petunidin is an O-methylated anthocyanidin. It is a natural organic compound and a particular type of anthocyanidin. It is a dark-red or purple water-soluble pigment found in many redberries including chokeberries , Saskatoon berries or different species of grape , and...
  
  , an anthocyanidin plant pigment
• a symbol for Peat
  Peat
  Peat is an accumulation of partially decayed vegetation matter or histosol. Peat forms in wetland bogs, moors, muskegs, pocosins, mires, and peat swamp forests. Peat is harvested as an important source of fuel in certain parts of the world...
  
   in the Unified Soil Classification System
  Unified Soil Classification System
  The Unified Soil Classification System is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol...
  
  

Machines

• PT Cruiser
  Chrysler PT Cruiser
  The Chrysler PT Cruiser is a retro styled compact automobile launched by Chrysler as a 5-door hatchback in early 2000 and as a 2-door convertible in early 2005 ....
  
  , a type of car made by Chrysler
• PT boat
  PT boat
  PT Boats were a variety of motor torpedo boat , a small, fast vessel used by the United States Navy in World War II to attack larger surface ships. The PT boat squadrons were nicknamed "the mosquito fleet". The Japanese called them "Devil Boats".The original pre–World War I torpedo boats were...
  
  , a type of small fast ship used by the US Navy in World War II
• Pannier tank locomotive
  Tank locomotive
  A tank locomotive or tank engine is a steam locomotive that carries its water in one or more on-board water tanks, instead of pulling it behind it in a tender. It will most likely also have some kind of bunker to hold the fuel. There are several different types of tank locomotive dependent upon...
  
  , an old steam locomotive

Computers

• Panorama Tools
• Pro Tools
  Pro Tools
  Pro Tools is a digital audio workstation platform for Microsoft Windows and Mac OS X operating systems, developed and manufactured by Avid Technology. It is widely used by professionals throughout the audio industries for recording and editing in music production, film scoring, film, and television...
  
  , a digital audio workstation platform from Digidesign
• .pt
  .pt
  .pt is the Internet country code top-level domain for Portugal and is managed by the Fundação para a Computação Científica Nacional .It has the following second-level domains:* .com.pt: no restrictions; online registration* .edu.pt: education...
  
  , an internet top-level domain name for Portugal

Mathematics

• Pythagoras Theorem
  Pythagorean theorem
  In mathematics, the Pythagorean theorem or Pythagoras' theorem is a relation in Euclidean geometry among the three sides of a right triangle...
  
  , related to sides of right angled triangles

Games

• Priston Tale
  Priston Tale
  PristonTale is a 3D fantasy MMORPG that centers on action-based role-playing. It was originally released in South Korea, 2001, by Yedang Online. It was created by Triglow Pictures Inc. and has since been published for Japan, China, Taiwan, Thailand, Vietnam, England, Philippines, Brazil and the...
  
  , an MMORPG based out of South Korea
• Prison Tycoon
  Prison Tycoon
  Prison Tycoon is a business simulation computer game developed by Virtual Playground and published by ValuSoft in July 2005 that puts the user in charge of a prison. Objectives are to keep the prison running, keep the staff happy, keep the prisoners in line, all while trying to make money.Users are...
  
  , a video game
• Pokemon Platinum
  Pokémon Platinum
  is a title in the Pokémon series of video games. It was developed by Game Freak and published by Nintendo for the Nintendo DS handheld game console. It is an enhanced remake of Pokémon Diamond and Pearl in the same vein as Pokémon Yellow, Crystal, and Emerald were for their respective games...
  
  , a video game for the Nintendo DS

Movies

• Prequel trilogy
  Star Wars
  Star Wars is an American epic space opera film series created by George Lucas. The first film in the series was originally released on May 25, 1977, under the title Star Wars, by 20th Century Fox, and became a worldwide pop culture phenomenon, followed by two sequels, released at three-year...
  
  , Episodes 1, 2, and 3 of the Star Wars series of movies

Music Theory

• Passing Tone, one of many nonharmonic tones that is approached by step and then continues by step in the same direction

Society

• Portuguese Language
  Portuguese language
  Portuguese is a Romance language that arose in the medieval Kingdom of Galicia, nowadays Galicia and Northern Portugal. The southern part of the Kingdom of Galicia became independent as the County of Portugal in 1095...
  
   ISO 639 alpha-2 code
• Perpetual traveler
  Perpetual traveler
  The term perpetual traveller refers to both a lifestyle and a philosophy.- Background :...
  
   - Permanent Tourist, or Prior Taxpayer
• Pt., an abbreviation for Pandit, a Hindu honorific applied to certain scholars of law, religion, philospohy or music

Political Parties

• Partido dos Trabalhadores
  Workers' Party (Brazil)
  The Workers' Party is a democratic socialist political party in Brazil. Launched in 1980, it is recognized as one of the largest and most important left-wing movements of Latin America. It governs at the federal level in a coalition government with several other parties since January 1, 2003...
  
  (Worker's Party), a Brazilian political party
• Parti des travailleurs
  Workers' Party (France)
  The Workers' Party was a French socialist party. It was formed by the Trotskyist Internationalist Communist Party led by Pierre Boussel, better known under his pseudonym Pierre Lambert, together with a number of other socialists with whom they worked in the Force Ouvrière union...
  
  (Workers' Party), a French political party
• Partido del Trabajo
  Labor Party (Mexico)
  The Labor Party is a nationally recognized political party in Mexico. It was founded on December 8, 1990. The party is currently led by Alberto Anaya....
  
  (Labour Party), a Mexican political party

Organizations And Types

• Perseroan Terbatas (Indonesian for "Private Limited"), a form of business incorporation in Indonesia
• Capital Cargo International Airlines
  Capital Cargo International Airlines
  Capital Cargo International Airlines, Inc. is a cargo airline based in Orlando, Florida, USA. It provides on-demand and wet lease aircraft charter. Its main base is Orlando International Airport. It is owned by the Air Transport Services Group .- History :...
  
   IATA airline designator
• West Air Sweden
  West Air Sweden
  West Air Sweden is a cargo airline based in Gothenburg, Sweden. It operates scheduled and ad hoc freight charter services for FedEx, DHL, TNT and UPS. It is also contracted to operate mail flights 6 nights a week on behalf of the Swedish post office...
  
   IATA airline designator
• Putnam Transit, a bus system that serves Putnam County, New York
• Porn Time
• Portugal Telecom
  Portugal Telecom
  Portugal Telecom is the largest telecommunications service provider in Portugal. Although it operates mainly in Portugal and Brazil, it has also a significant presence in Guinea-Bissau, Cape Verde, Mozambique, Timor-Leste, Angola, Kenya, the People's Republic of China, and São Tomé and...
  
  

Places

• Palestinian Territories
  Palestinian territories
  The Palestinian territories comprise the West Bank and the Gaza Strip. Since the Palestinian Declaration of Independence in 1988, the region is today recognized by three-quarters of the world's countries as the State of Palestine or simply Palestine, although this status is not recognized by the...
  
  
• Petronas Towers, a pair of towers in Kuala Lampur, Malaysia
• Park and Tilford Gardens, a 3-acre (12,000 m2) botanical garden in the City of North Vancouver.
• Pulau Tiga
  Pulau Tiga
  Pulau Tiga is one of a group of small uninhabited islands in Kimanis Bay off the western coast of Sabah, Malaysia. The islands were formed on September 21, 1897, when an earthquake on Mindanao caused a volcanic eruption near Borneo...
  
  , an island in South China Sea
• Petah Tikva
  Petah Tikva
  Petah Tikva known as Em HaMoshavot , is a city in the Center District of Israel, east of Tel Aviv.According to the Central Bureau of Statistics, at the end of 2009, the city's population stood at 209,600. The population density is approximately...
  
  , a city in Israel
• Port Townsend, Washington
  Port Townsend, Washington
  Port Townsend is a city in Jefferson County, Washington, United States, approximately north-northwest of Seattle . The population was 9,113 at the 2010 census an increase of 9.3% over the 2000 census. It is the county seat and only incorporated city of Jefferson County...
  
  , a city in Jefferson County, WA, in the United States.
• Portugal
  Portugal
  Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...
  
  's ISO country code
• Park Tudor, a private, independent school in Indianapolis, Indiana, United States