activated charcoalCharcoal that has been treated to remove hydrocarbons and to increase its adsorptive properties.
Activated sludge processA biological wastewater treatment process in which a mixture of waste water and activated sludge is agitated and aerated.
activationThe process of converting a storage group copy to a production storage group. Local continuous replication (LCR) and standby continuous replication (SCR)…
Activation DataPrivate data, other than keys, that are required to access cryptographic modules.
Active(abbrev. ACTV). In solar-terrestrial terms, solar activity levels with at least one geophysical event or several larger radio events (10cm) per day (Class…
Active (Usable) Storage CapacityThe total amount of reservoir capacity normally available for release from a reservoir below the maximum storage level.
Active Air DefenseDirect defensive actions taken to nullify or reduce the effectiveness of hostile air action.
Active capacityThe reservoir capacity normally usable for storage and regulation of reservoir inflows to meet established reservoir operating requirements.
Active Central Office CodeA Central Office code assigned by the CO Code Administrator and implemented in the PSTN for specific routing and rating requirements as of the LERG…
Active Communications Security ThreatThreats to an electronic system posed by a capability to disrupt communications or to seize control or deny positive control of electronic systems to…
Active conservation capacity (active storage)The reservoir capacity assigned to regulate reservoir inflow for irrigation, power, municipal and industrial use, fish and wildlife, navigation…
Active Conservation StorageThe portion of water stored in a reservoir that can be released for all useful purposes such as municipal water supply, power, irrigation, recreation…
Active ContentActive content refers to electronic documents that are able to automatically carry out or trigger actions on a computer platform without the intervention…
Active CoolingThe use of mechanical heat pipes or pumps to transport heat by circulating heat transfer fluids.
Active DataActive data is information residing on the direct access storage media of computer systems, which is readily visible to the operating system and/or…
Active Defense(1) The employment of limited offensive action and counterattacks to deny a contested area or position to the enemy. Also Passive Defense.
Active Defense (TBMD)Active defense protects against theater missiles by destroying them in flight. Engagement capability is required throughout all phases of the missiles…
active deviceA device that requires a source of energy for its operation and has an output that is a function of present and past input signals.
Active DirectoryThe directory service for Microsoft Windows 2000 Server and Windows Server 2003.
Active Directory (AD)A structure supported by Windows 2000 that lets any object on a network be tracked and located.
Active Directory and JournalingAlthough there is no performance impact or special considerations about the impact of journaling on Active Directory®, it is important to understand how…
Active Directory Application Mode (ADAM) instanceFor Active Directory Application Mode (ADAM), a single copy of the ADAM directory service, along with its associated directory store, assigned Lightweight…
Active Directory contactAn Active Directory object that contains information about an individual such as name, address, and job title. It can include a foreign e-mail address.
Active Directory Domain ServicesThe Microsoft Windows based directory service. Active Directory stores information about objects on a network and makes this information available to…
Active Directory Domain Services (AD DS)The Windows-based directory service. Active Directory stores information about objects on a network and makes this information available to users and…
Active Directory Federation ServicesA component that provides Web single-sign-on (SSO) technologies. AD FS provides SSO by securely sharing digital identity and entitlement rights across…
Active Directory Service Interfaces (ADSI)A client-side product based on the Component Object Model (COM). ADSI defines a directory service model and a set of COM interfaces that enable Windows NT…
Active earth pressureThe minimum value of earth pressure. This condition exists when a soil mass is permitted to yield sufficiently to cause its internal shearing resistance…
Active faultA fault which, because of its present tectonic setting, can undergo movement from time to time in the immediate geologic future.
active fishFish that are feeding heavily and striking aggressively.
Active Homing GuidanceGuidance system in which both the source for illuminating the target, and the receiver for detecting the illuminating energy reflected from the target is…
active inducement to infringeOne may be held liable for patent infringement as a result of actively encouraging another to infringe if such other does infringe, even though the…
Active IngredientAn active ingredient is any component that provides pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or…
active key stateA condition of readiness for a key to be used to secure information from the originator, and to process received secure information. [After X9.17]
active laser mediumWithin a laser, the material that emits coherent radiation or exhibits gain as the result of electronic or molecular transitions to a lower energy state…
Active LongitudeIn solar-terrestrial terms, the approximate center of a range of heliographic longitudes in which Active Regions are more numerous and more flare-active…
Active Management Area (AMA)Active Management Areas were established in Arizona to provide long-term management and conservation of limited groundwater supplies.
Active Messaging ProtectionA process by which antivirus and anti-spam agents and filters are applied to e-mail messages for the purpose of stopping unsolicited or malicious e-mails…
Active NegationProvides better noise immunity on a SCSI bus.
active partitionA partition from which a computer starts up. The active partition must be a primary partition on a basic disk.
Active PowerThe power (in Watts) used by a device to produce useful work. Also called input power.
Active ProminenceIn solar-terrestrial terms, a prominence displaying material motion and changes in appearance over a few minutes of time.
active recordA record needed to perform current operations, subject to frequent use, and usually located near the user Also referred to as current record.
Active RecordsActive Records are those Records related to current, ongoing or in-process activities and are referred to on a regular basis to respond to day-to-day…
Active Region (AR)In solar-terrestrial terms, a localized, transient volume of the solar atmosphere in which plages, sunspots, faculae, flares, etc. may be observed.
active satelliteA satellite carrying a station intended to transmit or retransmit radio communication signals.
Active SensorOne that illuminates a target, producing return secondary radiation, which is then detected to track and/or identify the target. An example is radar.
Active Server Page (ASP)A Web server scripting language developed by Microsoft for its Internet Information Server.
Active Server Pages (ASP pages)Technology that allows Web developers to combine scripts and HTML code to create dynamic Web content and Web-based applications.
active signaling linkA signaling link that has successfully completed the initial alignment procedures and carries (or is ready to carry) signaling traffic. [T1.226-1992]
Active Solar HeaterA solar water or space-heating system that use pumps or fans to circulate the fluid (water or heat-transfer fluid like diluted antifreeze) from the solar…
Active Storage CapacityIn hydrologic terms, the total amount of reservoir capacity normally available for release from a reservoir below the maximum storage level.
Active Surge Region (ASR)In solar-terrestrial terms, an Active Region that exhibits a group or series of spike-like surges that rise above the limb.
active surveillance(AK-tiv ser-VAY-lents) Closely monitoring a patient's condition but withholding treatment until symptoms appear or change.
Active TerminationAn active terminator uses one or more voltage regulators to produce the termination voltage, rather than using resister voltage dividers.
active threat1. Any threat of a deliberate unauthorized change to the state of a data processing system.
Active tradersMarket participants who trade frequently, often many times a day, and therefore are attune to the ebbs and flows, the rumors, breaking news, activities of…
Active transportThe movement of a molecule or groups of molecules across a cell membrane, which requires the expenditure of cellular energy, because the direction of…
active video frame identificationThe process of comparing each output video frame with its preceding frame(s) in sequence and quantifying the extent of correspondence between each pair…
Active volcanoA volcano that is erupting. Also, a volcano that is not presently erupting, but that has erupted within an historical time and is considered likely to…
active volumeThe volume from which the computer starts up. The active volume must be a simple volume on a dynamic disk.
Actively managed fundManagers of actively managed mutual funds buy and sell investments to achieve a particular goal, such as providing a certain level of return or beating a…
Activities of daily livingTo live independently, you must be able to handle certain essential functions, called activities of daily living (ADLs).
activityThe number of transformations that take place each second in a given amount of radioactive material.
activity factorFor a communications channel during a specified time interval, such as the busy hour, the percentage of time that a signal is present in the channel in…
activity loggingA process used to collect information about the activity in an enterprise.
Activity YearThe year for which the HMDA data are being collected.
actual argumentThe value of an argument passed to a method from outside the method. When a method is called, the actual argument values are copied into the corresponding…
actual argumentsThe scalar values that you supply to a "function" or "subroutine" when you call it.
Actual cash valueAn amount equivalent to the replacement cost of lost or damaged property at the time of the loss, less depreciation.
Actual Cash Value (ACV)The value of your property, based on the current cost to replace it minus depreciation.
Actual cubic feet per minute (ACFM)The actual cubic feet per minute of gas flowing in a process at the temperature and pressure of the process at that point.
actual evapotranspirationThe rate of water lost from vegetation and soil, ordinarily at a slower rate than the potential rate.
Actual Level of RedeploymentThe actual amount of FTE officers that the grantee will realize because of the time savings generated from the technology or civilian personnel funded by…
actual parameter listThe arguments specified in a particular method call. See also formal parameter list.
Actual wageActual wage means the wage rate paid by the employer to all individuals with experience and qualifications similar to the H-1B nonimmigrant's experience…
Actuarial justificationThe demonstration by an insurer that the premiums collected are reasonable, given the benefits provided under the plan or that the distribution of…
Actuarial ValueThe percentage of total average costs for covered benefits that a plan will cover.
ACTVActive. In solar-terrestrial terms, solar activity levels with at least one geophysical event or several larger radio events (10cm) per day (Class M…
acupoint(AK-yoo-poynt) A specific spot on the body where an acupuncture needle may be inserted to control pain and other symptoms. Also called acupuncture point.