Post-AttackThe period following the attack, prior to the next wave.
Post-Attack PeriodIn nuclear warfare, that period which extends from the termination of the final attack until political authorities agree to terminate hostilities.
Post-Boost Phase (PBP)That portion of the trajectory of a ballistic missile between the end of powered flight and release of the last RV.
Post-Boost Vehicle (PBV)The portion of a rocket payload that carries multiple warheads and which has the maneuvering capability to independently target each warhead on a final…
post-production processingIn broadband ISDN (B-ISDN), applications, the processing of audio and video information after contribution and prior to final use.
postalizeIn communications, to structure rates or prices so that they are not distance sensitive, but depend on other factors, such as call duration, type of…
postfixAn "operator" that follows its "operand", as in $x++.
postingA message in a computerized messaging system, and which can be retrieved by multiple entities on multiple occasions. Synonym article.
PostmasterThe person to contact at a particular server/site to get help, or information about that server/site.
Potential ImpactThe loss of confidentiality, integrity, or availability could be expected to have: a limited adverse effect (FIPS 199 low); a serious adverse effect (FIPS…
PowerAuthority to do. One has the power to do something if he is of legal age. Also, used as "powers," the term refers to authority granted by one person to…
power budgetThe allocation, within a system, of available electrical power, among the various functions that need to be performed.
power circuit breaker (PCB)1. The primary switch used to apply and remove power from equipment. 2. A circuit breaker used on ac circuits rated in excess of 1500V.
Power DensityThe amount of power per unit area of a free windstream.
power downWith respect to an electrical and especially an electronic device, to turn off or otherwise disconnect its primary source of electric power.
power entrance facility (PEF)A space in a building where commercial ac power, standby ac power, or both, enter the building.
Power factorThe ratio of real to total power. In alternating-current power transmission and distribution, the cosine of the phase angle between the voltage and…
power failure transfer1. The switching of primary utilities to their secondary backup whenever the primary source operates outside its design parameters. 2.
power marginThe difference between available signal power and the minimum signal power needed to overcome system losses and still satisfy the minimum input…
power upWith respect to an electrical and especially an electronic device, to turn on or otherwise connect its primary source of electric power.
power-law index profileFor optical fibers, a class of graded-index profiles characterized by where n(r) is the nominal refractive index as a function of distance from the fiber…
PowerPathA host-based software product from Symmetrix that delivers intelligent I/O path management.
Poynting vectorThe vector obtained in the direction of a right-hand screw from the cross-product (vector product) of the electric field vector rotated into the magnetic…
PP(1) Parallel Processing. (2) Principal Polarization. (3) Post Processing. (4) Program Plan.
PPBES(1) Planning, Programming, Budgeting, and Execution System. (2) Program Planning and Budgeting System.
Practice StatementA formal statement of the practices followed by an authentication entity (e.g., RA, CSP, or verifier); typically the specific steps taken to register and…
pragmaA standard module whose practical hints and suggestions are received (and possibly ignored) at compile time. Pragmas are named in all lowercase.
PRB(1) Planning and Resources Board. (2) Program Review Board.
Pre Launch SurvivabilityThe probability that a delivery and/or launch vehicle will survive an enemy attack under an established condition of warning.
Pre-Allocated DefenseA preplanned decision to designate a specific number of defensive assets to be used against a specific target or set of targets or to defend a specified…
pre-arbitrated slotA slot dedicated by the head-of-bus function for transferring isochronous service octets.
Pre-AttackA period of time immediately prior to an attack, usually hours to minutes to tip-off.
Pre-Authorized Engagement Criteria (PEC)Pre-specified quantitative operational parameter thresholds which when surpassed cause automated engagements to be enabled.
Pre-Commit StrategyA tactic in which defense weapons are fired without being individually committed to specific targets.
pre-staged clientA computer account object that is created within Active Directory Domain Services (AD DS) before the operating system of the computer is installed.
Preallocated DiskA type of virtual disk in which all the host disk space for the virtual machine is allocated at the time the virtual disk is created.
preassignment access planIn satellite communications system operations, a fixed communication channel access plan, as opposed to a demand assignment access plan in which…
precedence1. A designator, which indicates the order in which a number of messages shall be served.
precedence rulesThe rules that determine the order of evaluation of an expression involving more than one operator.
PrecinctSee County Election Precinct and Election Day precinct.
Precipitation AttenuationThe loss of energy that radar beam experiences as it passes through an area of precipitation.
PrecisionThe accuracy with which a number can be represented, i.e., the number of digits used to represent a number.
Precision and RecallPrecision is the ability to retrieve the most precise results. Higher precision means better relevance and more precise results, but may imply fewer…
Precision DecoysDecoys that precisely match RV characteristics either exoatmospherically or endoatmospherically , or both, and seek to deceive the defense into…
precision-sleeve splicingOptical fiber splicing that uses a capillary tube, of suitable material, to align the mating fibers.
precombiningThe combining of multiplexed signals prior to the modulation of the carrier. [From Weik '89] Synonym premodulation combining.
Preconditions for Defense (PD)PDs are NCA pre-approved criteria, authorities, and procedures that delineate circumstances under which USCINCSPACE BMD forces will initiate or continue…
PrecursorA sign that an attacker may be preparing to cause an incident.
predesignationAn exchange carrier (EC) service that is provided by suitably equipped end-office switching systems, and by means of which are provided carrier…
predetectionReferring to that portion of the circuitry of a receiver which, with respect to the signal being processed, is chronologically prior to the detection.
predicateIn Exchange Server 2007, a function that is used as a condition or exception on a transport rule to determine whether an action should be applied to an…
preemphasisA system process designed to increase, within a band of frequencies, the magnitude of some (usually higher) frequencies with respect to the magnitude of…
preemphasis improvementIn FM broadcasting, the improvement in the signal-to-noise ratio of the high-frequency portion of the baseband, i.e.
preemphasis networkA network inserted in a system in order to increase the magnitude of one range of frequencies with respect to another.
preemptThe currently executing thread may be preempted, or forced to yield control, by a higher priority thread that becomes eligible to run during its timeslice.
preemptionThe seizure, usually automatic, of military system facilities that are being used to serve a lower precedence call in order to serve immediately a higher…
preemption toneIn military telephone systems, a distinctive tone that is used to indicate to connected users, i.e.
preemptive multitaskingthe execution of more than one program at a time on the same CPU with time-sharing strictly controlled by a scheduler.