intrinsic joint lossOf nonidentical optical fibers joined by a splice or a mated pair of connectors, the power loss attributable to manufacturing variations, in such…
intrinsic noiseIn a transmission path or device, that noise inherent to the path or device and not contingent upon modulation.
intrinsic valueA company's intrinsic value, or underlying value, is used to calculate its projected worth.
Intruder OperationAn offensive operation by day or night over enemy territory with the primary object of destroying enemy aircraft in the vicinity of their bases.
Intrusion Prevention SystemsSystems which can detect an intrusive activity and can also attempt to stop the activity, ideally before it reaches its targets.
intrusive measurementsMeasurements that require that the facility be taken out of service and made unavailable to the user. [T1.Rpt25-1993]
invalid frameA frame for which one or more of the following conditions apply: the frame is not properly bounded by flags; the frame does not consist of an integral…
Inventorya detailed accounting of all items within a specified location. Examples include but are not limited to: evidence in the evidence vault, evidence in the…
Inventory Control PointAn organizational unit or activity within a DoD supply system that is assigned the primary responsibility for the materiel management of a group or items…
inverse adaptive quantizerIn the encoder and the feedback path of the decoder, the process that maps the core bits into a quantized difference signal.
Inverse CipherSeries of transformations that converts ciphertext to plaintext using the Cipher Key.
inverse functional propertyIf a property is inverse functional then it means that the inverse property is functional.
inverse multiplexerA functional unit capable of accessing and combining two or more low-speed circuits into a virtual broadband circuit, up to and including an aggregate…
inverse propertyIf some property links individual a to individual b then its inverse property will link individual b to individual a.
Inverse Square LawThe law that states when thermal or nuclear radiation is uniformly emitted from a point source, the amount received per unit area at any given distance…
Inverse Synthetic Aperture Radar (ISAR)A type of radar similar to synthetic aperture radar, which uses information from the motion of targets to provide high resolution.
inverted entryA heading with the natural order of words transposed so that it is sorted under a word that normally appears at the end See also direct entry and indirect…
inverted positionIn frequency-division multiplexing, a position of a translated channel in which an increasing signal frequency in the untranslated channel causes a…
InverterA device that converts direct current electricity (from for example a solar photovoltaic module or array) to alternating current for use directly to…
Invisible WebPortions of the web which are not easily accessible to crawlers due to search technology limitations, copyright issues, or information architecture issues.
invocantThe agent on whose behalf a "method" is invoked. In a "class" method, the invocant is a package name.
invocationThe act of calling up a deity, daemon, program, method, subroutine, or function to get it do what you think it's supposed to do.
IONDSIntegrated Operational Nuclear Detonation Detection System (US).
IonizationA process that produces ions, typically collisions between atoms or electrons, or by interaction with electromagnetic radiation.
ionizing radiation(I-uh-NYZ-ing RAY-dee-AY-shun) A type of radiation made (or given off ) by x-ray procedures, radioactive substances, rays that enter the Earth's…
IONLAbbreviation for Internal Organization of the Network Layer. The OSI standard for the detailed architecture of the Network Layer.
IonosphereThe region of Earth's atmosphere that extends from about 50 to 300 miles above the surface of the planet and is made up of multiple layers dominated by…
ionosphere sounderA device that transmits signals for the purpose of determining ionospheric conditions. [NTIA] [RR]
ionospheric absorptionAbsorption occurring as a result of interaction between an electromagnetic wave and free electrons in the ionosphere.
ionospheric disturbanceAn increase in the ionization of the ionosphere, caused by solar activity, which results in greatly increased radio wave absorption.
ionospheric reflectionOf electromagnetic waves propagating in the ionosphere, a redirection, i.e., bending--by a complex processing involving reflection and refraction--of the…
ionospheric scatterThe propagation of radio waves by scattering as a result of irregularities or discontinuities in the ionization of the ionosphere.
ionospheric soundingA technique that provides real-time data on high-frequency ionospheric-dependent radio propagation, using a basic system consisting of a synchronized…
ionospheric turbulenceOngoing disturbances of the ionosphere that scatter incident electromagnetic waves.
IPWithin the peritoneal cavity (the area that contains the abdominal organs). Also called intraperitoneal.
IP AddressA string of four numbers separated by periods used to represent a computer on the Internet.
IP address/TCP port combinationA combination of attributes that uniquely identifies Simple Mail Transfer Protocol (SMTP), Network News Transfer Protocol (NNTP), Internet Message Access…
IP Allow listA filtering list that is used by the Connection Filter agent in Exchange Server 2007.
IP Block listA filtering list that is used by the Connection Filter agent in Exchange Server 2007. IP addresses on the IP Block list are considered spam.
IP BypassPardon IP addresses from SMTP authentication enabled on any domain. This is often used to allow clients who have applications that do not support SMTP…
IP datagramThe fundamental unit of information passed across any network utilizing Internet protocol.
IP DeliverySimilar to agent name delivery, this technique presents different content depending on the IP address of the client.
IP dialup accessNonpermanent access, by means of a switched network (e.g., the public switched telephone network), to any network utilizing The Internet Protocol…
IP gatewayA third-party hardware device or product that connects a legacy PBX to a LAN. An IP gateway translates or converts TDM or telephony circuit-switched…
IP multicastA technique that allows packets to be simultaneously transmitted over the Mbone (multicast backbone on The Internet) to a selected set of destinations.
IP SANA Storage Area Network (SAN) created using the Internet SCSI (iSCSI) protocol to connect over a Gigabit Ethernet network.
IP Security (IPsec)An Institute of Electrical and Electronic Engineers (IEEE) standard, Request For Comments (RFC) 2411, protocol that provides security capabilities at the…
IP spoofingA technique used by hackers to access computer systems by modifying packet headers to make them appear to have originated from a trusted port. 2.
IP switchingA method of routing developed to use asynchronous transfer mode (ATM) hardware to route packets through networks more rapidly.
IP4RA DNS lookup that attempts to determine if a mail server is likely to be sending spam.