Look up PM, Pm, pm, p.m. in Wiktionary, the free dictionary.

PM, Pm, pm or p.m. can refer to: Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 151 languages. ...

Science

• Particulate matter, fine dust and soot suspended in the air
• Permanent magnet, an object which stays magnetised without external effort
• Perpetual motion, refers to movement that goes on forever
• Petametre, a length unit (10¹⁵ m) (Pm)
• Phase modulation, in electrical engineering
• Picometre, a length unit (10^-12 m) (pm)
• Plasma membrane, is a selectively permeable lipid bilayer found in all cells
• Post meridiem (also written P.M., p.m., and pm), Latin for "after noon", used to disambiguate hours of the day in the twelve-hour clock system
• Powdery mildew, a fungal disease that affects a wide range of plants
• Precious metal, a rare metallic chemical element of high economic value
• Promethium, chemical element number 61 (Pm)
• Preventive maintenance, preventive maintenance (Pm)

Particulates, alternatively referred to as particulate matter (PM), aerosols or fine particles, are tiny particles of solid or liquid suspended in a gas. ... Magnetic lines of force of a bar magnet shown by iron filings on paper A magnet is an object that has a magnetic field. ... This article or section should include material from Parallel Path See also Perpetuum mobile as a musical term Perpetual motion machines (the Latin term perpetuum mobile is not uncommon) are a class of hypothetical machines which would produce useful energy in a way science cannot explain (yet). ... A petametre (American spelling: petameter) (symbol: Pm) is a unit of length equal to 1015 metres. ... Phase modulation (PM) is a form of modulation which represents information as variations in the instantaneous phase of a carrier wave. ... One picometre is defined as 1x10-12 metres, in standard units. ... Drawing of a cell membrane A component of every biological cell, the cell membrane (or plasma membrane) is a thin and structured bilayer of phospholipid and protein molecules that envelopes the cell. ... The 12-hour clock is a timekeeping convention in which the 24 hours of the day are divided into two periods called ante meridiem (a. ... Powdery mildew Powdery mildew is a fungal disease that affects a wide range of plants. ... For the CSI episode of the same name, see Precious Metal (CSI episode). ... General Name, Symbol, Number promethium, Pm, 61 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance metallic Atomic mass [145](0) g/mol Electron configuration [Xe] 4f5 6s2 Electrons per shell 2, 8, 18, 23, 8, 2 Physical properties Phase solid Density (near r. ... Preventive maintenance (PM) has the following meanings: The care and servicing by personnel for the purpose of maintaining equipment and facilities in satisfactory operating condition by providing for systematic inspection, detection, and correction of incipient failures either before they occur or before they develop into major defects. ...

Medicine

• Polymyositis
• Post mortem, a medical examination carried out after death

{{ }} Polymyositis is a type of inflammatory myopathy, related to dermatomyositis and inclusion body myositis. ... An autopsy (also known as a post-mortem examination, necropsy or obduction) is a medical procedure that consists of a thorough examination performed on a corpse after death, to evaluate disease or injury that may be present and to determine the cause and manner of a persons death. ...

Mathematics

• Principia Mathematica, a three-volume work on the foundations of mathematics

The Principia Mathematica is a three-volume work on the foundations of mathematics, written by Alfred North Whitehead and Bertrand Russell and published in 1910-1913. ...

Computing

• Particle Mesh, an algorithm for calculating the potential of a system (used in computational physics).
• Perl module, a discrete component of software for the Perl programming language
• Personal message or private message, in the context of bulletin board systems and Internet forums

A Perl module is a discrete component of software for the Perl programming language. ... A PM is a personal message from one Internet user to another. ...

Politics

• Pontifex Maximus, the high priest of the Ancient Roman College of Pontiffs
• Prime minister, the most senior minister of a cabinet
• Pubblico Ministero, an Italian magistrate's office

Alternate meanings: see Pontifex (disambiguation) In Ancient Rome, the Pontifex Maximus was the high priest of the collegium of the Pontifices, the most august position in Roman religion, open only to a patrician, until 254 BC, when a plebeian first occupied this post. ... A prime minister is the most senior minister of cabinet in the executive branch of government in a parliamentary system. ... A magistrate is a judicial officer. ...

Economy

• Altria Group, previously named "Phillip Morris"
• Pobjoy Mint, a European mint, via its mint mark "PM"
• Postmaster, the head of an individual post office
• Project manager or project management, the discipline of organizing and managing resources
• Power Machines or Silmash, a Russian industrial company

Philip Morris redirects here. ... The Pobjoy Mint is a privately owned mint in Surrey, England. ... If you are looking for different meanings of this word, see Postmaster (disambiguation) A postmaster is a term used in post offices to denote the head or master of the office. ... A project manager is the person who has the overall responsibility for the successful planning and execution of any project. ...

Literature

• Perry Mason, a fictional defense attorney
• The Peoples of Middle-earth by Christopher Tolkien
• Popular Mechanics, an American magazine devoted to science and technology
• P.M. (author), an anonymous Swiss author

Perry Mason is a fictional defense attorney who originally appeared in detective fiction by Erle Stanley Gardner. ... The Peoples of Middle-earth is the 12th and final volume of The History of Middle-earth, edited by Christopher Tolkien from the unpublished manuscripts of his father J. R. R. Tolkien. ... The adolescent Internet. ...

Media

• PM (Radio 4), a BBC Radio 4, a news and current affairs programme
• PM (ABC Radio), an ABC Radio national news magazine programme
• PM (newspaper), a politically leftist U.S. newspaper in the 1940s

PM is an early evening (PM at five PM) news magazine programme broadcast on BBC Radio 4. ... PM is a current affairs program on ABC Radio. ... PM was a leftist daily newspaper in New York City launched in June 1940, bankrolled by eccentric Chicago millionaire Marshall Field III. The paper employed some radical journalists, among them some known members of the Communist Party. ...

Other

• Palm mute, in guitar tablature
• Pere Marquette Railway (Association of American Railroads reporting mark PM)
• Personal Message - A Windows Live Messenger feature.
• Pistolet Makarova, a semi-automatic pistol designed in the late 1940s
• Polar Medal, a medal awarded by the Sovereign of the United Kingdom
• Preventive maintenance, preventative maintenance or proactive maintenance, the care and servicing of equipment for the purpose of maintaining it in satisfactory operating condition
• Saint-Pierre and Miquelon: ISO 3166-1 alpha-2 country code
• Tropic Air IATA airline designator
• Price Match Price Matching/Price Guarantee policy.

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