single point keying[A] means of distributing key to multiple, local crypto-equipment or devices from a single fill point. [INFOSEC-99]
single point of controlA control relationship where the same phase or aspect of a call/service attempt is influenced by one and only one service control function. [T1.667-1999]
single precisionRefers to a level of coordinate accuracy based on the number of significant digits that can be stored for each coordinate.
single primer amplification reaction(Abbreviation: SPAR). A PCR-based genotyping technique in which genomic template is amplified with a single primer.
single sign-onA process that enables a user with a domain account to log on to a network once, using a password or smart card, and to gain access to any computer in the…
Single-AZ DB InstanceA standard (non-Multi-AZ) DB instance that is deployed in one Availability Zone, without a standby replica in another Availability Zone.
Single-cell clonedA procedure pertaining to cells in vitro in which the descendants of a single cell are physically isolated from other cells growing in a dish, and then…
single-ended service featureA feature, e.g., call/service attempt manipulation, that applies to only one of the parties that may be involved on a call/service attempt. [T1.667-1999]
single-ended synchronizationSynchronization between two locations, in which phase error signals used to control the clock at one location are derived by comparing the phase of the…
Single-family houseA type of residential structure designed to include one housing unit. Adjacent units may share walls and other structural components, but each unit has…
Single-Family PropertiesOne- to four-unit properties including detached homes, townhouses, condominiums, and cooperatives, and manufactured homes attached to a permanent…
Single-Family ResidenceA residential single family dwelling. Incidental office, professional, private school, or studio occupancies, including a small service operation, are…
single-frequency (SF) signalingIn telephony, signaling in which dial pulses or supervisory signals are conveyed by a single voice-frequency tone in each direction.
single-frequency interferenceInterference caused by a single-frequency source. Note 1: An example of single-frequency interference is interference in a transmission channel induced by…
Single-gene disorderHereditary disorder caused by a mutant allele of a single gene (e.g., Duchenne muscular dystrophy, retinoblastoma, sickle cell disease).
single-harmonic distortionOf a fundamental frequency, the ratio of the power of a specified harmonic to the power of the fundamental frequency.
Single-Hop ProblemThe security risks resulting from an mobile software agent moving from its home platform to another platform.
Single-Level DeviceA device that is used to process data of a single security level at any one time.
Single-master operationsActive Directory operations that are single-master, that is, not permitted to occur at different places in the network at the same time.
Single-Member DistrictA district within a larger political subdivision, such as a city or school district, from which a single individual is elected to represent the…
Single-Package SystemA year 'round heating and air conditioning system that has all the components completely encased in one unit outside the home.
Single-PhaseA generator with a single armature coil, which may have many turns and the alternating current output consists of a succession of cycles.
single-photon emission computed tomography(SIN-gul-FOH-ton ee-MIH-shun kum-PYOO-ted toh-MAH-gruh-fee) A special type of computed tomography (CT) scan in which a small amount of a radioactive drug…
single-polarized antennaAn antenna that radiates or receives radio waves with a specific polarization. Note: For a singly polarized antenna, the desired sense of polarization is…
single-sideband (SSB) equipment reference levelThe power of one of two equal tones that, when used together to modulate a transmitter, cause it to develop its full rated peak power output.
single-strand DNA binding proteinA protein that coats single-stranded DNA, preventing renaturation and so maintaining the DNA in an extended state.
single-stranded DNA(Abbreviation: ssDNA). DNA molecules separated from their complementary strand, either by its absence or following denaturation.
single-stranded nucleic acidNucleic acid molecules consisting of only one polynucleotide chain. The genomes of many viruses are single-stranded DNA molecules, as are most…
Single-Sum DistributionNon-periodic distribution from a qualified retirement plan received before an annuity start date. TERI payouts are considered single-sum distributions.
single-tone interferenceAn undesired discrete frequency appearing in a transmission channel. Note: The single-tone interference frequency is the frequency that appears in the…
SingletA space vehicle, such as a Brilliant Pebble, which contains only one intercept vehicle.
singleton patternA pattern that allows us to ensure that only a single instance of a particular class exists at any one time. Such an instance is called a singleton.
Singulair(SING-yoo-layr) A drug used to treat symptoms of asthma, such as trouble breathing, tight chest, wheezing, coughing, and runny nose.
Singular Value DecompositionThe process of breaking down a large database to find the document vector (relevance) for various items by comparing them to other items and documents.
SinkAny process, activity, or mechanism which removes a greenhouse gas, an aerosol, or a precursor of a greenhouse gas or aerosol from the atmosphere.
SinkholeA steep-sided depression formed when removal of subsurface embankment or foundation material causes overlying material to collapse into the resulting void.
Sinking fundTo ensure there's money on hand to redeem a bond or preferred stock issue, a corporation may establish a separate custodial account, called a sinking…
SinuosityThe ratio of the length of a river's thalweg to the length of the valley proper. A measure of a river's meandering. Rivers with a sinuosity less than 1.
SiphonA pipe connecting two canals. A tube or pipe through which water flows over a high point by gravity.
Siphon SpillwayA spillway with one or more siphons built at crest level. This type of spillway is sometimes used for providing automatic surface-level regulation within…
Siphon tubeRelatively short, light-weight, curved tube used to convey water over ditch banks to irrigate furrows or borders.
SiphonageA partial vacuum created by the flow of liquids in pipes.
SiphoningThe use of various means to steal another site's traffic. Techniques used include the wholesale copying of web pages (with the copied page altered…
siplizumabA monoclonal antibody that is being studied in the treatment of certain lymphoproliferative disorders and psoriasis. Also called MEDI-507.
SIPRIStockholm International Peace Research Institute (Sweden).
SIPRNET(1) Secret Internet Protocol Router Network. (2) Secure Information Protocol Net.
SIPT(1) System Integrated Product Team. (2) Services Integrated Product Team.
Sipuleucel-T(SY-puh-LOO-sel...) A vaccine made from immune system cells collected from a patient with prostate cancer.
SIRa published statutory invention registration contains the specification and drawings of a regularly filed nonprovisional application for a patent without…
SIRASearch and Information Resources Administration, an organizational unit of the Patent business area. -- see Patent Resources and Planning for more
SIRSA serious condition in which there is inflammation throughout the whole body. It may be caused by a severe bacterial infection (sepsis), trauma, or…
SIRST SystemShipboard Infrared Search and Track System (USN term).
SISSpecial Compartmented Information Isolation Segment.
SITCSee Standard International Trade Classification (SITC)
SiteIn archeology, any location of past human activity.
site certificateA certificate obtained for an individual site. A site certificate is different from a trusted root certificate in that a site certificate lets you access…
site collectionA set of Web sites on a virtual server that have the same owner and share administration settings.
Site ConnectorAn Exchange component that enables users in sites on the same local area network (LAN) to exchange messages. [Exchange 5.5]
Site database(_SITEDB)The site database contains all portal and team site information including documents and lists.
site groupSite groups are custom security groups that apply to a specific Web site. Users are assigned to site groups to grant them permissions on a SharePoint site.
Site GroupsSite groups are custom security groups that apply to a specific Web site. Users are assigned to site groups to grant them permissions on a SharePoint site.