PM 272347 224113274 2008-07-07T11:04:02Z Nurg 28564 There is no article called "Post Meridiem" - the article is called "12-hour clock" - moved it to the top {{wiktionarypar4|PM|Pm|pm|p.m.}} '''PM''', '''Pm''', '''pm''' or '''p.m.''' can refer to: ===Time=== * ''Post meridiem'' (also written P.M., p.m., and pm), "after noon" in the [[12-hour clock]], in contrast to ''ante meridiem'' (a.m., "before noon") ===Science=== * Particulate matter, [[particulate]]s — 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 (10<sup>15</sup> m) (Pm) * [[Phase modulation]], in electrical engineering * [[Picometre]], a length unit (10<sup>-12</sup> m) (pm) * [[Plasma membrane]], is a selectively permeable lipid bilayer found in all cells * [[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) ===Medicine=== * [[Polymyositis]] * [[Post mortem]], a medical examination carried out after death ===Mathematics=== * [[Principia Mathematica]], a three-volume work on the foundations of mathematics ===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 ===Politics=== * [[Pontifex Maximus]], the high priest of the Ancient Roman College of Pontiffs * [[Prime minister]], the most senior minister of a cabinet ===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 ===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 ===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 ===Other=== * [[Palm mute]], in guitar tablature * [[Pere Marquette Railway]] (Association of American Railroads reporting mark PM) * [[Makarov PM]] (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 {{disambig}} [[ca:Pm]] [[da:PM (flertydig)]] [[de:PM]] [[es:Pm]] [[eo:Pm]] [[fr:PM]] [[ko:PM]] [[id:PM]] [[it:PM]] [[nl:PM]] [[ja:PM]] [[no:Pm]] [[pl:PM]] [[pt:PM]] [[ksh:PM (Watt ėßß datt?)]] [[ru:PM]] [[fi:Pm]] [[sv:PM]] [[zh:Pm]]