SpillThe accidental release of radioactive materials.
spill forwardIn automatic switching, the transfer of full control on a call to the succeeding office by sending forward the complete telephone address of the called…
Spill lightLight that falls outside of the area intended to be lighted.
spill-forward featureA service feature, in the operation of an intermediate office, that, acting on incoming trunk service treatment indications, assumes routing control of…
spilloverIn an antenna, the part of the radiated energy from the feed that does not impinge on the reflectors.
SpillsWater releases that cannot be put to use for project purposes (includes floodflows).
SpillwayA passage for surplus water to flow over or around a dam.
Spillway barrierA barrier to block the entry or escape of all fish through the spillway during periods of overflow.
Spillway channelAn open channel or conduit conveying water from the spillway inlet downstream.
Spillway chuteA steeply sloping spillway channel that conveys discharges at super-critical velocities.
Spillway CrestThe lowest level at which water can flow over or through a spillway.
SPIMSStrategic Program Information Management System (SDIO/MDA term). 274
spin-casting, spin-castSometimes called American spinning, or closed face spinning. Uses a fixes spool enclosed in a nose cone so the line leaving the reel's nose cone comes out…
Spin-offIn a spin-off, a company sets up one of its existing subsidiaries or divisions as a separate company.
Spin-UpSlang for a small-scale vortex initiation, such as what may be seen when a gustnado, landspout, or suction vortex forms.
spinal column(SPY-nul KAH-lum) The bones, muscles, tendons, and other tissues that reach from the base of the skull to the tailbone.
spinal cordA column of nerve tissue that runs from the base of the skull down the back. It is surrounded by three protective membranes, and is enclosed within the…
spinal cord compression(SPY-nul KORD kum-PREH-shun) Pressure on the spinal cord that may be caused by a tumor, a spinal fracture, or other conditions.
spinal tap(SPY-nul ...) A procedure in which a thin needle called a spinal needle is put into the lower part of the spinal column to collect cerebrospinal fluid or…
spincasterA manner of fishing employing a push-button, closed-faced spinning reel or baitcasting rod; the reel is mounted topside on the rod.
spindleAn intracellular fibrous structure, involved in the control of chromosome movement in mitosis and meiosis.
spindle cell cancer(... KAN-ser) A type of cancer that begins in the skin or in tissues that line or cover internal organs and that contains long spindle-shaped cells.
spindle cell sarcomaA type of connective tissue cancer in which the cells are spindle-shaped when examined under a microscope.
SPINEThe bones, muscles, tendons, and other tissues that reach from the base of the skull to the tailbone.
spine cancerCancer that begins in the spinal column (backbone) or spinal cord. The spinal column is made up of linked bones, called vertebrae.
spinnerbaitAn artificial bait consisting of a leadhead and one or two rotating blades and either a straight or a safety-pin style shaft dressed with material (often…
spinningA manner of fishing employing an open-face or closed-face spinning reel and spinning rod; reel is mounted on the underside of the rod and the rod guides…
Spinning reelA fixed spool reel, generally referring to open-faces spinning.
Spinning ReserveElectric power provider capacity on line and running at low power in excess of actual load.
Spinning reservesAvailable capacity of generating facilities synchronized to the interconnected electric system where it can be called upon for immediate use in response…
spiral CT scanA detailed picture of areas inside the body. The pictures are created by a computer linked to an x-ray machine that scans the body in a spiral path.
Spiral DevelopmentAn iterative process for developing a defined set of capabilities within one increment.
spiral trackA track with a spiral shape written on a diskette, as part of a method of copy protection. [2382-pt.8]
spiral wrapA molded, insulated plastic product in the form of a helix, used to contain or dress electrical wiring, e.g.
spiral-four cableA quadded cable with four conductors. Synonym star quadded cable.
SPIRITAs opposed to a ghost (see above), a spirit is normally the soul of the deceased that has crossed over, and exists in a spiritual or metaphysical plane.
spirituality(SPIR-ih-choo-A-lih-tee) Having to do with deep, often religious, feelings and beliefs, including a person's sense of peace, purpose, connection to…
Splash 'n' GoA quick pit stop that involves nothing more than refueling the race car with the amount of fuel necessary to finish the race,
Splash pageSimilar to a gateway page but provides an initial display which must be viewed before a visitor reaches the main page.
SplatterData that should be kept on one disc of a jukebox goes instead to multiple platters.
spleenAn organ that is part of the lymphatic system. The spleen makes lymphocytes, filters the blood, stores blood cells, and destroys old blood cells.
Splenectomy(spleh-NEK-toh-mee) An operation to remove the spleen.
splenic(SPLEH-nik) Having to do with the spleen (an organ in the abdomen that makes immune cells, filters the blood, stores blood cells, and destroys old blood…
spliceTo join, permanently, physical media that conduct or transmit power or a communication signal. 2. A device that so joins conducting or transmitting media.
splice closureA usually weatherproof encasement, commonly made of tough plastic, that envelops the exposed area between spliced cables, i.e.
splice lossIn fiber optic systems, any loss of optical power at a splice. Note: A practical splice, of physically realizable fibers, has losses attributable to a…
splice organizerIn optical communication, a device that facilitates the splicing or breaking out of fiber optic cables.
Splice siteLocation in the DNA sequence where RNA removes the noncoding areas to form a continuous gene transcript for translation into a protein.
spliceosomeA complex of small nuclear ribonucleoproteins and other proteins that assemble on an immature mRNA and catalyse the excision of an intron. See: splicing.
Splicing1. During the maturation of eukaryotic mRNA, the process that removes intron sequences and covalently joins exon sequences. Synonym: editing. 2.
splicing junctionThe DNA sequence immediately surrounding the boundary between an exon and an intron.
splineA mathematical curve used to smoothly represent spatial variation. A spline operation inserts vertices to create a curve in an arc.
split1. With respect to a signal, to divert a portion of it, or divide it, into usually predetermined or specified proportions. 2.
split access tokenA combination of full access token and filtered access token linked together by the local security authority (LSA) component of the operating system.
Split BetA single bet that one of two particular numbers will hit on the next spin.
split brain syndromeSplit brain syndrome occurs when all networks designated to carry internal cluster communications fail, and nodes cannot receive heartbeat signals from…
Split FlowA flow pattern high in the atmosphere characterized by diverging winds. Storms moving along in this type of flow pattern usually weaken.
split geneIn eukaryotes, the encoding DNA of many structural genes is made up of exons and introns .
Split HandSplit the initial two-card hand into two and play them separately - allowed only when the two first cards are of equal value.
split homingThe connection of a terminal facility to more than one switching center by separate access lines, each of which has a separate directory number.
Split itineraryAn itinerary in which part of the group does one thing while the other part does something else.
Split KnowledgeA procedure whereby a cryptographic key is handled as multiple key components from the time that the key or the separate key components are generated…
Split PotA pot that is shared by two or more players because they have equivalent hands.
split screenOn a display device, display space that has been divided into two or more areas, so that each area can display different portions of the same file or…
Split shot, split-shottingA style of finesse fishing employing a split shot weight up the line typically 6 to 18 inches above a small artificial worm, lizard, crawfish or grub…
Split Spectrum Photovoltaic CellA photovoltaic device where incident sunlight is split into different spectral regions, with an optical apparatus, that are directed to individual…
Split System Air ConditionerAn air conditioning system that comes in two to five pieces: one piece contains the compressor, condenser, and a fan; the others have an evaporator and a…
Split Two PairA two pair hand in which one of each of your cards' ranks appears on the board as well. Example: you have T9, the flop is T-9-5, you have a split two pair.
Split-funded annuityA split-funded annuity lets you begin receiving income from a portion of your principal immediately, while the rest of the money goes into a deferred…
splitterSee directional coupler, T-coupler, tee coupler.
Splitter wallA wall or pier parallel to the direction of flow in a channel that separates flows released from different sources as a means of energy dissipation.
Splitting on the HeadsWhen a towboat is faced up to the center of two strings of barges.
Splitting StormA thunderstorm which splits into two storms which follow diverging paths (a left mover and a right mover).
SPOF (Single Point of Failure)A component of a cluster or node that, if it fails, affects access to applications or services. See also multiple points of failure.
SpoilDirt or rock which has been removed from its original location. Excavated material.
SpoilerA metal blade attached to the rear deck lid of the car. It helps restrict airflow over the rear of the car, providing downforce and traction.
SpoliationGenerally, the intentional or negligent destruction or alteration of evidence when there is current litigation or an investigation or there is reasonable…
SponsorAn individual or business establishment that financially supports a race driver, team, race or series of races in return for advertising and marketing…
sponsor certificateA certificate that indicates the restrictions on those documents and transactions that an entity may authorize. [After X9.45]
Sponsored ImmigrantAn immigrant who has had an Affidavit of Support filed for him/her.
spontaneous emissionRadiation emitted when the internal energy of a quantum mechanical system drops from an excited level to a lower level without regard to the simultaneous…
spoofed mailAn e-mail message whose sending address has been modified to appear as though it originates from a sender other than the actual sender of the message.
SpoofingSome market analysts maintain that the increased volatility in stock markets may be the result of an illegal practice known as spoofing, or phantom bids.
spookAlarming a fish, such as making too much noise, movement or casting a shadow so fish become "spooked."
SpookingThe act of standing behind the dealer to peak at the hole card and then secretly convey the information to a partner player sitting at the table.
Spool/QueueA directory on the mail server that holds emails before they are viewed or downloaded from a client.
spoolingThe use of auxiliary storage as buffer storage to reduce processing delays when transferring data between peripheral equipment and the processors of a…