ExpertGlossary terms starting with S

4,972 terms

stereophonic crosstalk An undesired signal occurring in the main channel from modulation of the stereophonic channel or that occurring in the stereophonic channel from…
stereophonic sound subcarrier A subcarrier within the FM broadcast baseband used for transmitting signals for stereophonic sound reception of the main broadcast program service. [47CFR]
Stereotactic (ster"ee-oh-tak'tik) characterized by precise positioning in space.
stereotactic biopsy (STAYR-ee-oh-TAK-tik BY-op-see) A biopsy procedure that uses a computer and a 3-dimensional scanning device to find a tumor site and guide the removal of…
stereotactic body radiation therapy (STAYR-ee-oh-TAK-tik BAH-dee RAY-dee-AY-shun THAYR-uh-pee) A type of external radiation therapy that uses special equipment to position a patient and…
stereotactic external-beam radiation therapy (STAYR-ee-oh-TAK-tik ... RAY-dee-AY-shun THAYR-uh-pee) A type of external radiation therapy that uses special equipment to position the patient and…
stereotactic injection A procedure in which a computer and a 3-dimensional scanning device are used to inject anticancer drugs directly into a tumor.
stereotactic radiation therapy (STAYR-ee-oh-TAK-tik RAY-dee-AY-shun THAYR-uh-pee) A type of external radiation therapy that uses special equipment to position the patient and precisely…
stereotactic radiosurgery (STAYR-ee-oh-TAK-tik RAY-dee-oh-SER-juh-ree) A type of external radiation therapy that uses special equipment to position the patient and precisely give a…
stereotaxic radiation therapy (STAYR-ee-oh-TAK-sik RAY-dee-AY-shun THAYR-uh-pee) A type of external radiation therapy that uses special equipment to position the patient and precisely…
stereotaxic radiosurgery (STAYR-ee-oh-TAK-sik RAY-dee-oh-SER-jeh-ree) A type of external radiation therapy that uses special equipment to position the patient and precisely give a…
stereotaxis (STAYR-ee-oh-TAX-iss) Use of a computer and scanning devices to create 3-dimensional pictures.
sterile (STER-il) Unable to produce children. Also means free from germs.
sterile room Dedicated space for the carrying out of activities that require sterile conditions.
sterile talc powder (STER-il...) A mineral, usually used in a powdered form. In cancer treatment, sterile talc powder is used to prevent pleural effusions (an abnormal…
sterility Complete or partial failure of an individual to produce functional gametes or viable zygotes under a given set of environmental conditions.
sterilize 1. The elimination of micro-organisms, using heat, irradiation, filtration or chemicals. 2.
Stern The back of the towboat or barge. (Bow is the front)
Stern Line A long line that secures the tow from the stern (back) of the vessel.
sternum The long flat bone that forms the center front of the chest wall. The sternum is attached to the collarbone and the first seven ribs.
steroid (STAYR-oyd) Any of a group of lipids (fats) that have a certain chemical structure.
steroid cream (STAYR-oyd...) A skin cream containing a type of drug that relieves swelling, itching, and inflammation.
steroid drug (STAYR-oyd) A type of drug used to relieve swelling and inflammation. Some steroid drugs may also have antitumor effects.
steroid metabolism gene (STAYR-oyd meh-TA-buh-lih-zum JEEN) A type of gene that helps the body build up or break down steroids.
steroid therapy (STAYR-oyd THAYR-uh-pee) Treatment with corticosteroid drugs to reduce swelling, pain, and other symptoms of inflammation.
Steward bottle Flask developed for the growth of cells and tissues in a liquid medium, in which they can be periodically submerged during rotation.
Stewardship Careful and responsible management to ensure that goals and objectives are being achieved for the benefit of current and future generations.
STF Static Test Facility.
STFR Stratus Fractus
STFS Abbreviation for standard time and frequency signal. See standard time and frequency signal service.
STG See Steam turbine generator
STI571 A drug used to treat different types of leukemia and other cancers of the blood, gastrointestinal stromal tumors, skin tumors called dermatofibrosarcoma…
Stick Slang term used for tire traction.
stick bait A slender plug or topwater lure that is given action by the angler manipulating the rod and reel, sometimes making the bait go back-and-forth to resemble…
Stick slip The process in which (1) the tape sticks to the recording head because of high friction; (2) the tape tension builds because the tape is not moving at the…
Stickers Slang term for new tires. The name is derived from the manufacturer's stickers that are affixed to each new tire's contact surface.
stickups Tips of trees and brush that "stick up" from the water and provide structure, primarily for bass fishing.
Sticky end A protruding, single-stranded nucleotide se- quence produced when a restriction endonuclease cleaves off center in its recognition sequence.
Sticky limit The lowest moisture content at which a soil will stick to a metal blade drawn across the surface of the soil mass.
sticky session A feature of the load balancer that binds a user's session to a specific application instance so that all requests coming from the user during the session…
Sticky shed The gummy deposits left on tape path guides and heads after a sticky tape has been played.
Sticky tape Tape characterized by a soft, gummy, or tacky tape surface. Tape that has experienced a significant level of hydrolysis so that the magnetic coating is…
Stiff Hand Hard hands that total between 12 and 16. Stiff hand are likely to bust when drawn to.
stigma Receptive portion of the style, to which pollen adheres.
STILAS Scientific and Technical Information Library Automation System (USASSDC term).
Stile A main vertical member of a door or window
Still gas Any form or mixture of gases produced in refineries by distillation, cracking, reforming, and other processes.
still image Nonmoving visual information, i.e., fixed images, such as graphs, drawings, and pictures.
still video Video imagery that is not intended to convey the appearance of movement.
still-fishing, still-fisherman Fishing from one spot; primarily refers to shore-fishing from a single location.
Stillage The grains and liquid effluent remaining after distillation.
Stilling Basin Concrete portion downstream from conduit, tunnel, or control structure. A pool, usually lined with reinforced concrete, located below a spillway, gate, or…
Stilling pool A pool located below a spillway, gate, or valve into which the discharge dissipates energy to avoid downstream channel degradation.
stimulant (STIM-yoo-lunt) In medicine, a family of drugs used to treat depression, attention-deficit disorder (a common disorder in which children are inattentive…
Stimulants A class of drugs that enhances the activity of monamines (such as dopamine) in the brain, increasing arousal, heart rate, blood pressure, and respiration…
Stimulated Emission Physical process by which an excited molecule is induced by incident radiation to emit radiation at an identical frequency and in phase with the incident…
STINFO Scientific Technological Information.
STINFO Center Science and Technical Information data centers archiving and providing user access and support to a variety of missile defense test and evaluation data.
stinger-hook An additional hook placed on a lure, spinnerbait or bait rig; also called a trailer hook.
stink bait Bait, such as chicken liver, that puts odor into the water, typically for catfishing.
Stippling A disposition of fragments of powder into the skin as the result of a gunshot wound of relatively close range.
Stipulation An agreement between the parties to settle all or part of the case without further hearings. The stipulation must be approved by the Court.
Stirling Engine A heat engine of the reciprocating (piston) where the working gas and a heat source are independent.
stirred-tank fermenter A growth vessel in which cells or micro-organisms are mixed by mechanically-driven impellers.
STJ Subtropical Jet - this jet stream is usually found between 20° and 30° latitude at altitudes between 12 and 14 km.
STL Abbreviation for standard telegraph level, studio-to-transmitter link.
STLT Satellite
STM Stratiform
STNRY Stationary
STO (1) Special Technical Operations (JFACC term). (2) Science and Technology Objective.
STOAL Short Takeoff/Arrested Landing.
Stochastic Random.
Stochastic modeling Stochastic modeling is a statistical process that uses probability and random variables to predict a range of probable investment performances.
stock A share of stock that represents ownership in the company that issues it. The price of the stock goes up and down, depending on how the company performs…
Stock certificate A stock certificate is a paper document that represents ownership in a corporation.
Stock Life Insurance Company A life insurance company owned by stockholders who share in the company's surplus earnings.
Stock market A stock market may be a physical place, sometimes known as a stock exchange, where brokers gather to buy and sell stocks and other securities.
Stock option A stock option, or equity option, is a contract that gives its buyer the right to buy or sell a specific stock at a preset price during a certain time…
stock plant The source plant from which cuttings or explants are obtained. Stock plants should be well maintained to optimize explant and cutting quality.
stock solution Pre-prepared solution of commonly used reagents.
Stock split When a company wants to make its shares more attractive and affordable to a greater number of investors, it may authorize a stock split to create more…
stock yield The annual dividend as a percentage of the price of the stock. For example, a stock selling at $40 a share with an annual dividend of $2 a share yields…
Stocked Populating a body of water with fish reared in hatcheries.
Stockholders' Equity The sum of proceeds from the issuance of stock and retained earnings less amounts paid to repurchase common shares.
stocking The practice of releasing hatchery raised fish into ponds, reservoirs, streams or rivers.
Stockpile A storage pile of materials.
Stoichiometric condition That condition at which the proportion of the air-to-fuel is such that all combustible products will be completely burned with no oxygen remaining in the…
Stoichiometric Ratio The ratio of chemical substances necessary for a reaction to occur completely.
Stoichiometry Chemical reactions, typically associated with combustion processes; the balancing of chemical reactions by providing the exact proportions of reactant…
Stolon A lateral stem that grows horizontally along the ground surface. Used by some plant species as a mechanism for dispersal, since stolon nodes can…
STOM System Test Object Model.
stoma (STOH-muh) A surgically created opening from an area inside the body to the outside.
stomach (STUH-muk) An organ that is part of the digestive system. The stomach helps digest food by mixing it with digestive juices and churning it into a thin…
stomach cancer (STUH-muk KAN-ser) Cancer that forms in tissues lining the stomach. Also called gastric cancer.
stomatal complex Includes the stoma, together with its guard cells and, when present, any related subsidiary cells.
stomatal index A measurement of the surface density of stoma ta. This parameter has been found useful in comparing leaves of different sizes.
stomatitis Inflammation or irritation of the mucous membranes in the mouth.
Stone A concretion of earthy or mineral matter; rock.
Stoney gate The fundamental difference between Stoney and fixed-wheel gates is that a moving train of rollers is substituted for the fixed wheels.
Stool The material in a bowel movement. Stool is made up of food that was not digested, bacteria, mucus, and cells from the intestines. Also called feces.