VEGFA substance made by cells that stimulates new blood vessel formation. Also called vascular endothelial growth factor.
VEGF TrapA substance being studied in the treatment of several types of cancer. VEGF Trap blocks the action of vascular endothelial growth factor (VEGF) and may…
VEGF-ASA substance being studied in the treatment of Kaposi sarcoma. It is a type of antisense oligonucleotide.
VEGFR tyrosine kinase inhibitor(VEGFR TY-ruh-seen KY-nayz in-HIH-bih-ter) A substance that blocks an enzyme needed to form blood vessels.
VEGFR-2 inhibitor CT-322(... in-HIH-bih-ter ...) A substance being studied in the treatment of cancer. VEGFR-2 inhibitor CT-322 prevents the growth of new blood vessels needed…
Vehicle CategoriesA system of classifying vehicles (e.g., passenger cars, commercial vehicles, trailers, off-road vehicles, and special-purpose vehicles).
Vehicle miles traveled (VMT)One vehicle traveling the distance of one mile. Thus, total vehicle miles is the total mileage traveled by all vehicles.
Vehicle Weight ClassThe size of vehicles. Includes light-duty, medium-duty, and heavy-duty vehicles based on their gross vehicle weight rating (the weight of a vehicle on its…
Vehicle-borne transmissionIn this situation, a vehicle—that is, an inanimate object or material called in scientific terms a "fomite", becomes contaminated with the infectious…
Vein(vayn) a vessel through which blood passes from various organs or parts back to the heart.
vein (vayn)A blood vessel that carries blood to the heart from tissues and organs in the body.
velafermin(vel-uh-FER-min) A substance that is being studied in the prevention and treatment of oral mucositis (sores in the mouth) in patients receiving high-dose…
Velcade(VEL-kayd) A drug used to treat multiple myeloma that has gotten worse during treatment with other anticancer drugs.
VelocityThe rate and direction of change of an object's position. The speed and direction at which something is moving.
Velocity Azimuth DisplayA WSR 88-D product which shows the radar derived wind speeds at various heights.
Velocity Cross SectionThis WSR-88D radar product displays a vertical cross section of velocity on a grid with heights up to 70,000 feet on the vertical axis and distance up to…
velocity of propagationOf an electrical or electromagnetic signal, its speed in a physical medium such as a coaxial cable or optical fiber.
Velocity ZonesAreas within the floodplain subject to potential high damage from waves. These sometimes appear on flood insurance rate maps.
velogeneticsThe combined use of marker-assisted selection and embryo technologies such as OPU, IVM and IVF, in order to increase the rate of genetic improvement in…
Vendor TrashAn item that only a vendor/merchant would buy
Vendor-Added MetadataData created and maintained by the electronic discovery vendor as a result of processing the document.
venipunctureThe puncture of a vein with a needle for the purpose of drawing blood. Also called phlebotomy.
VenireA writ summoning persons to court to act as jurors. See venire facias in Foreign Words Glossary.
venlafaxineAn antidepressant drug that is being evaluated for the treatment of hot flashes in women who have breast cancer.
venography(veh-NAH-gruh-fee) A procedure in which an x-ray of the veins is taken after a special dye is injected into the bone marrow or veins.
venous sampling(VEE-nus...) A procedure in which a sample of blood is taken from a certain vein and checked for specific substances released by nearby organs and tissues.
VentA component of a heating or ventilation appliance used to conduct fresh air into, or waste air or combustion gases out of, an appliance or interior space.
Vent DamperA device mounted in the vent connector that closes the vent when the heating unit is not firing.
Vent PipeA tube in which combustion gases from a combustion appliance are vented out of the appliance to the outdoors.
Vented HeaterA type of combustion heating appliance in which the combustion gases are vented to the outside, either with a fan (forced) or by natural convection.
VentilationThe process of moving air (changing) into and out of an interior space either by natural or mechanically induced (forced) means.
Ventilation AirThat portion of supply air that is drawn from outside, plus any recirculated air that has been treated to maintain a desired air quality.
Ventilation IndexProduct of the mixing depth and transport wind speed, a measure of the potential of the atmosphere to disperse airborne pollutants from a stationary…
VentilatorIn medicine, a machine used to help a patient breathe. Also called respirator.
ventral finThe paired fin located on the front of a fish's abdomen.
ventricle(VEN-trih-kul) A fluid-filled cavity in the heart or brain.
Venture capital (VC)Venture capital is financing provided by wealthy independent investors, banks, and partnerships to help new businesses get started, reach the next level…
VenturiA pressure jet that draws in and mixes air.
Venturi EffectThe speedup of air through a constriction due to the pressure rise on the upwind side of the constriction and the pressure drop on the downwind side as…
venueThe geographical location in which a case is tried.
Vepesid(VEH-peh-sid) A drug used to treat testicular and small cell lung cancers. It is also being studied in the treatment of several other types of cancer.
Verbatim CodingExtracting data from documents in a collection in a way that matches exactly as the information appears in the documents.
VerdictA conclusion, as to fact or law, that forms the basis for the judgment of the jury or the court. See Judgment as a Matter of Law.
VerificationTo confirm the truth or correctness of something. Vitreous humor – The ocular fluid (from within the eye) that is often used as a sample for testing in…
verification certificateA certificate that represents the public-key portion of a token-signing certificate.
Verification RateA statistic used to measure biometric performance when operating in the verification task. The rate at which legitimate end-users are correctly verified.
verified developmentDevelopment of a system or part of a system where the transformation from one representation to another is mathematically proven, or demonstrated to be…
Verified NameA subscriber name that has been verified by identity proofing.
verified off-hookIn telephone systems, a service provided by a unit that is inserted on each end of a transmission circuit for the purpose of verifying supervisory signals…
Verified Statement/ShowingA verfied statement is one made with the stated knowledge that false statements and the like are punishable by fine or imprisonment, or both, and may…
VerifierAn entity that verifies the claimants identity by verifying the claimants possession of a token using an authentication protocol.
Verifier Impersonation AttackAn attack where the attacker impersonates the verifier in an authentication protocol, usually to learn a password.
vermiculiteMaterial made from expanded mica used as a rooting medium and as a soil additive.
Vernal poolSeasonally-flooded depressions found on soils with an impermeable layer such as a hardpan, claypan, or volcanic basalt.
vernalizationChilling juvenile plants for a minimum period in order to induce flowering. Some plants require veRNA lization to flower, but others have no such…
Vernam cypherAn extremely secure cryptographic approach to enciphering messages, wherein each character of a message gets assigned a random character from the key; the…
VernierA device permitting finer measurement or control than standard markings or adjustments.
Versed(ver-SED) A drug used to treat anxiety and tension and to relax muscles. It is also being studied in the treatment of nausea and vomiting caused by some…
version historyThe (reverse) chronological listing of revisions that have been made to an item, and any associated comments attached to the version by the user…
version labelA number or other text that indicates the version of an item.
Version, Record VersionA particular form or variation of an earlier or original record. For electronic records the variations may include changes to file format, metadata or…
versioningDocument and picture versioning creates a backup copy of a file whenever it is saved to the library.
vertebral columnThe bones, muscles, tendons, and other tissues that reach from the base of the skull to the tailbone.
VertebrateAny species having a backbone or spinal column including fish, amphibians, reptiles, birds, and mammals.
vertexOne of a set of ordered x,y coordinates that constitutes a line.
vertex angleIn an optical fiber, the angle formed by the extreme bound meridional rays accepted by the fiber, or emerging from it, equal to twice the acceptance…
Vertical angle of viewElevation of viewer relative to the elevation of the proposed action, and the resulting angle of difference.
Vertical CloudA cloud computing environment optimized for use in a particular vertical -- i.e., industry -- or application use case.
Vertical curveThe meeting of different gradients in a road or pipe.
vertical equityThe concept that people in different income groups should pay different rates of taxes or different percentages of their incomes as taxes.
vertical filingFile system in which files are accessed from front to back or from side to side Note: Also used to describe furniture built to support this type of file…
Vertical Ground LoopIn this type of closed-loop geothermal heat pump installation, the fluid-filled plastic heat exchanger pipes are laid out in a plane perpendicular to the…
Vertical lift gateAll rectangular gates set in vertical guides within which the gate moves vertically in its own plane. The hoist is usually on a runway overhead.
vertical portalA Web search engine that locates very precisely a few Web pages of particular interest according to the character strings or subject entered as the search…
Vertical SearchA search service which is focused on a particular field, a particular type of information, or a particular information format. For example, Business.
Vertical VelocityThe component of velocity (motion) in the vertical. The evaluation of areas of upward vertical velocity is key to forecasting areas of active weather.
Vertical Wind Shearthe change in the wind's direction and speed with height. This is a critical factor in determining whether severe thunderstorms will develop.
Vertical-Axis Wind Turbine (VAWT)A type of wind turbine in which the axis of rotation is perpendicular to the wind stream and the ground.
Vertically Stacked SystemA low-pressure system, usually a closed low or cutoff low, which is not tilted with height, i.e., located similarly at all levels of the atmosphere.