Page ViewUsed in site statistics as a measure of pages viewed rather than server hits. Many server hits may be made to access a single page, causing many separate…
PagejackingStealing high-ranking web page content from another site and placing it on your site in the hopes of increasing your own site's search engine rankings.
pagerA small radio receiver designed to be carried by a person and to give an aural, visual, or tactile indication when activated by the reception of a radio…
PageRankA logarithmic scale based on link equity which estimates the importance of web documents.
PageRank (PR)Google uses a weighted form of link popularity called PageRankÂ. Not all links are created equal.
paginationSome APIs that return a potentially large list of records can return a subset by using a value to set the maximum number of returned records.
pagingA one-way communications service from a base station to mobile or fixed receivers that provide signaling or information transfer by such means as tone…
paging systemA one-way mobile radio service where a user carries a small, lightweight miniature radio receiver capable of responding to coded signals.
paid AMIAn Amazon Machine Image (AMI) that you sell to other Amazon EC2 users.
Paid InclusionA method of allowing websites which pass editorial quality guidelines to buy relevant exposure. See also: Directories such as the Yahoo!
Paid placementpaying a search engine to have your listing show up prominently. These listings are usually denoted as "sponsored listings."
pair-gain systemA transmission system that uses concentrators or multiplexers so that fewer wire pairs may be used than would otherwise be required to provide service to…
paired cableA cable made up of one or more separately insulated twisted-wire pairs, none of which is arranged with another to form quads.
paired disparity codeA code in which some or all of the characters are represented by two sets of digits of opposite disparity that are used in sequence so as to minimize the…
Palm Print RecognitionA biometric modality that uses the physical structure of an individual's palm print for recognition purposes, as illustrated below.
palm-topA small (pocket-size), hand-held computer, often including network-access software, personal-schedule software, and a basic word processor.
PALSProtection Against Limited Strikes (SDIO term).
Pancake AltitudeAltitude at which the trailing edge of a chaff puff/cloud effectively catches up to the leading edge because of atmospheric slowdown.
paneA separate area in a split window. A window can be split into two or more panes.
panic(PA-nik) Sudden extreme anxiety or fear that may cause irrational thoughts or actions.
PanningAn applied material, usually metal, that covers the front (exterior) surface of an existing window frame or mullion
PAPAn enzyme produced by the prostate. It may be found in increased amounts in men who have prostate cancer. Also called prostatic acid phosphatase.
paperwork managementCollectively, the techniques of managing the creation, maintenance and disposition of records. Also agency programs incorporating such techniques.
PARPerformance and Accountability Report -- see Annual Reports for more
par meterAbbreviation for peak-to-average ratio meter. A meter used to measure, calculate, and display the ratio of the peak power level to the time-averaged power…
para-virtualizationA virtualization approach that exports a modified hardware abstraction which requires operating systems to be explicitly modified and ported to run.
parabolic antennaAn antenna consisting of a parabolic reflector and a radiating or receiving element at or near its focus.
parabolic profileIn an optical fiber, a power-law index profile with the profile parameter, g, equal to 2. Synonym quadratic profile.
ParallelTransmission of all the bits (e.g. in a character) at the same time. If the character has eight bits, there are eight wires.
parallel computerA computer that has multiple arithmetic units or logic units that are used to accomplish parallel operations or parallel processing.
parallel portA port through which two or more data bits are passed simultaneously, such as all the bits of an 8-bit byte, and that requires as many input channels as…
Parallel ProcessingIn parallel processing multiple processors (CPUs) divide up a large task into smaller ones and each CPU acts on the subdivided task simultaneously so that…
parallel programmingA style of programming in which statements are not necessarily executed in an ordered sequence but in parallel.
Parallel TechnologyAn interface that allows a hard drive to receive multiple bits of information at the same time through short, wide cables carrying multiple signals.
parallel transmissionThe simultaneous transmission of the signal elements of a character or other data item. 2.
parallel-to-serial conversionConversion of a stream of multiple data elements, received simultaneously, into a stream of data elements transmitted in time sequence, i.e.
parallelismWhen speaking about GridFTP transfers, parallelism refers to having multiple TCP connections between a single pair of network endpoints.
parameterA value or measurement that varies with circumstances, and is used as a reference to quantify a situation or a process.
parameter entityAn entity that consists of DTD specifications, as distinct from a general entity.
parametric amplifier (paramp)An amplifier that (a) has a very low noise level, (b) has a main oscillator that is tuned to the received frequency, (c) has another pumping oscillator of…
Parametric Cost EstimateA cost estimating methodology using statistical relationships between historical costs and other program variables such as system physical or performance…
Parametric searchParametric searching allows people to find items of interest based on an individual item's parameters, or particular characteristics.
parasitic elementOf an antenna, a directive element that is not connected to a radio transmitter or receiver either directly or via a feeder, but is coupled to the driven…
parasitic emissionIn a communications system in which one or more electromagnetic sources are used, electromagnetic radiation--such as lightwaves, radio waves, microwaves…
paravirtualizationPara-virtualization uses a special kernel, sometimes referred to as the xen kernel or kernel-xen to virtualized another environment while using the hosts…
paravirtualized driversPara-virtualized drivers are device drivers that operate on fully virtualized linux guests.
paraxial rayIn optical systems, a ray that is close to and nearly parallel with the optical axis.
parcel dataData representing the geographic limits of property ownership as defined by some legal instrument.
Parcel LotLand often not residing within a square, most of which were created in 1905 by Act of Congress.
PARCSPerimeter Acquisition Radar and Attack Characterization System.
parent documentA document whose values are inherited by another document (the child document).
Parent ObjectAn object in which another object resides. For example, a folder is a parent object in which a file, or child object, resides.
Parent OrganizationThe organization that is applying for the Personal Identity Verification card on behalf of an applicant.
parent partitionThe partition that manages the virtual machines.
Parent-child trust relationshipThe two-way, transitive trust relationship that is established when you add a domain to an Active Directory tree.
ParityA form of data protection used by RAID level 5 to recreate the data of a failed drive in a disk array.
parity bitAn extra bit that can be added to a group of "0" bits and "1" bits to make the parity of the group odd or even.
parity checkA test that determines whether the number of ones or zeros in an array of binary digits is odd or even.
parity checkingA method of data verification. Parity information is used to reconstruct data.
parity diskDisk on which parity information is stored for a RAID group.
parking partyRepresentative of the served user who parks a call via "call park."
PARPROPeacetime Application of Reconnaissance Programs.
PARSAbbreviation for paging and radiotelephone service. A radio service in which common carriers are authorized to offer and provide paging and radiotelephone…
parsed entityA general entity that contains XML and therefore is parsed when inserted into the XML document, as opposed to an unparsed entity.
parserA module that reads in XML data from an input source and breaks it into chunks so that your program knows when it is working with a tag, an attribute, or…
parsingUsually applied to the action of a compiler in analyzing a program source file for syntax errors.
partIn a multipart upload request, each part is a contiguous portion of the object's data.
part 68The section of Title 47 of the Code of Federal Regulations governing (a) the direct connection of telecommunications equipment and customer premises…
Partial Mission CapableMaterial condition of an aircraft or training device indicating that it can perform at least one, but not all, of its missions. Also called PMC.
partial-dial conditionA condition in which outpulsing has commenced, insufficient information has been received by the customer installation (CI) to process the call and no…
Participating ServiceA military Service that supports the lead Service in the development of a joint acquisition program by its contribution of personnel and/or funds.
Particle Beam (PB)High-energy beam made up of atomic/sub-atomic particles (electrons, protons, or neutrons) accelerated to near the speed of light.
Particle Beam Weapon (PBW)A weapon that relies on the technology of particle accelerators (atom-smashers) to emit beams of charged or neutral particles, which travel near the speed…
PartitionA partition is an individual section of computer storage media such as a hard drive.
Partition TableThe partition table indicates each logical volume contained on a disc and its location.
partitionedA characteristic of virtualization which refers to the independent nature of the virtual machines allowing them to run different operating systems on the…
partitioned security mode[An] information-system (IS) security mode of operation wherein all personnel have the clearance, but not necessarily formal access approval and…
partitioningA software technology able to create multiple instances of the same host OS, called partitions, instead of reproducing multiple different physical…
partnerA member of a clustered pair. From the point of view of the local filer, the other filer in the cluster is the partner. See also "takeover partner."
partner modeThe method used to communicate through the command-line interface with the failed filer in a cluster during a takeover.
party ID1. The served user's (or controller's) reference to a particular party within the context of a call.
party lineIn telephone systems, an arrangement in which two or more user end instruments, usually telephones, are connected to the same loop.
PASSA working trip or passage of an excavating, grading, or compaction machine. See compaction.
passbandThe portion of spectrum, between limiting frequencies (or, in the optical regime, limiting wavelengths), that is transmitted with minimum relative loss or…
PassivationA chemical reaction that eliminates the detrimental effect of electrically reactive atoms on a photovoltaic cell's surface.
PassiveIn surveillance, an adjective applied to actions or equipment, which emit no energy capable of being detected. 219