Editing PM (section)

==Science, technology, and mathematics==
===Biology and medicine===
*[[Plasma membrane]], also known as cell membrane
*[[Polymyositis]], a disease
*[[Poor metabolizer]], a term used in pharmacogenomics to refer to individuals with little to no functional metabolic activity
*[[Post-mortem]]
*[[Precision medicine]]
*[[Pyridoxamine]], the amine form of vitamin B<sub>6</sub>

===Chemistry and materials science===
*Parametric Method 3 ([[PM3 (chemistry)]]), in computational chemistry
*[[Particulate matter]], microscopic particles suspended in the air
**[[PM10]], particulates smaller than 10&nbsp;μm
*[[Powder metallurgy]], a method of fabricating metals
*[[Promethium]], symbol Pm, a chemical element

===Computing===
*[[Particle mesh]], an algorithm for determining forces
*[[Perl module]], file extension .pm
*[[Private message]], a private communication channel on some platforms

===Units of measurement===
*[[Petametre]] (Pm), a length unit (10<sup>15</sup>&nbsp;m)
*[[Picometre]] (pm), a length unit (10<sup>−12</sup>&nbsp;m)
*Picomolar (pM), a unit of [[Molar concentration#Units|molar concentration]]

===Vehicles===
*Martin PM, a version of the [[Naval Aircraft Factory PN]] flying boat
*[[Toyota PM]], a concept car
*[[PKP class Pm36|Pm36]], a Polish steam locomotive

===Weapons===
====Guns and mortars====
*[[Makarov PM]] (Pistolet Makarova), a Soviet and Russian pistol
*[[Minebea PM-9]], a Japanese submachine gun
*[[PM-38]], a Soviet light mortar
*[[PM-63 RAK]], Polish submachine gun
*[[PM-84 Glauberyt]], Polish submachine gun

*[[PM md 96]], a Romanian submachine gun

*Precision Marksman (PM), a sniper rifle and precursor to the [[accuracy international arctic warfare]] rifle

====Mines====
*[[PM-43 and PM-68 mine]], Finland
*[[PM-60 mine]], East Germany
*[[PM-79 mine]], Bulgaria

===Other uses in science, technology, and mathematics===
*[[Army Nuclear Power Program|PM-1, PM-2A, PM-3A]], US Army portable nuclear reactors
*[[Phase modulation]], in signal processing
*[[Polarization-maintaining optical fiber]] or PM fiber
*''[[Principia Mathematica]]'', by Whitehead and Russell
*The [[plus–minus sign|plus or minus]] sign, a symbol used in mathematics