network policyA set of conditions, settings, and constraints that determine who can connect to a network. Network policy is configured by a network administrator.
Network Policy ServerThe Microsoft implementation of a Remote Authentication Dial-In User Service (RADIUS) server and proxy.
network provided number (NPN)An ISDN number, supplied by the calling user's or the redirecting user's network, which is associated with the calling user or the redirecting user.
network providerThe organization that maintains and operates the network components required for intelligent network (IN) functionality.
network resourceAn individual computer on an internal corporate or private network that users can connect to through a TS Gateway server.
network restorationAutomatic or manual methods to return a network to its normal function in response to a network failure. [T1.Rpt24-1993]
network routingAn interconnected set of lines representing possible paths for the movement of resources, people, or traffic from one location to another.
network sectionThe network components that provide a virtual connection between two circuit sections.
network securityProtection of networks and their services from unauthorized modification, destruction, or disclosure.
Network Service accountA predefined local account that is used to start a service and provide the security context for that service.
network service partThe combination of the MTP (message transfer part) and the SCCP (signaling connection control part). [T1.110-1987]
network sideThe side of the network interface or the network functions as seen from the interface. [T1.601-1988]
network siteA collection of functional units that provide network services and that belong to one management domain and are considered as a whole. [2382-pt.35] 2.
network surveillanceA process concerned with surveillance of the network as a whole. It includes activities for coordination and assigning priorities to maintenance actions.
network survivabilityThe (a) ability of a network to maintain or restore an acceptable level of performance during network failures by applying various restoration techniques…
network survivability modelThe analytical processes for estimating how well network services will be affected and restored with transparencies to the users as a result of a failure.
network terminal number (NTN)In the ITU-T International X.121 format, the sets of digits that comprise the complete address of the data terminal end point.
network terminationNetwork equipment that provides functions necessary for network operation of ISDN access protocols.
network termination 1 (NT1)In Integrated Services Digital Networks (ISDN), a functional grouping of customer-premises equipment that includes functions that may be regarded as…
network termination 2 (NT2)In Integrated Services Digital Networks (ISDN), an intelligent device that may include functionality for OSI Layers 1 through 3 (dependent on individual…
network topologyThe specific physical, i.e., real, or logical, i.e., virtual, arrangement of the elements of a network.
network traceA facility for tracing the route of a computer that is connected to the Internet. See also "packet trace."
network trusted computing base (NTCB)[The] totality of protection mechanisms within a network, including hardware, firmware, and software, the combination of which is responsible for…
network userA user that is accessing resources on a remote system. A network user may not have a UI or desktop on the remote computer.
network utilityAn internetwork administrative signaling mechanism in the call control procedure between packet switching public data networks.
network virtualizationNetwork virtualization is a method of combining the available resources in a network by splitting up the available bandwidth into channels, each of which…
network weavingIn computer security, a penetration technique in which different communication networks are used to gain access to a data processing system to avoid…
network-launched applicationIn a computer networking environment, an application (program) that is centrally stored, e.g.
networking protocolsA networking protocol is software that provides a communication gateway (link) allowing the exchange of data between various networking systems.
Neulasta(noo-LA-stuh) A drug used to increase numbers of white blood cells in patients who are receiving chemotherapy. It is a type of colony-stimulating factor.
Neumega(noo-MEH-guh) A drug used to increase the number of blood cells, especially platelets, in some cancer patients receiving chemotherapy.
neuralHaving to do with nerves or the nervous system, including the brain and the spinal cord.
Neural crestA band of cells that extend lengthwise along the neural tube of an embryo and give rise to cells that form the cranial, spinal, and autonomic ganglia, as…
Neural Net/Neural NetworkA type of algorithm that learns from past experience to make decisions. See also algorithm.
Neural NetworkNeural networks are made up of interconnected processing elements called units, which respond in parallel to a set of input signals given to each
Neural plateA thickened band of ectoderm along the dorsal surface of an embryo. The nervous system develops from this tissue.
Neural stem cellA type of stem cell that resides in the brain, which can make new nerve cells (called neurons) and other cells that support nerve cells (called glia).
Neural stem cell (NSC)A stem cell found in adult neural tissue that can give rise to neurons, astrocytes, and oligodendrocytes.
Neural tubeThe embryological forerunner of the central nervous system.
neuro-oncologist(NOOR-oh-on-KAH-loh-jist) A doctor who specializes in diagnosing and treating brain tumors and other tumors of the nervous system.
neurobehavioral(NOOR-oh-bih-HAY-vyer-ul) Having to do with the way the brain affects emotion, behavior, and learning.
neuroblastoma(NOOR-oh-blas-TOH-muh) Cancer that arises in immature nerve cells and affects mostly infants and children.
neurocognitive(NOOR-oh-KOG-nih-tiv) Having to do with the ability to think and reason. This includes the ability to concentrate, remember things, process information…
NeuroectodermThe central region of the early embryonic ectoderm, which later forms the brain and spinal cord, as well as evolving into nerve cells of the peripheral…
neuroectodermal tumor(NOOR-oh-EK-toh-DER-mul TOO-mer) A tumor of the central or peripheral nervous system.
neuroendocrine(NOOR-oh-EN-doh-krin) Having to do with the interactions between the nervous system and the endocrine system.
neuroendocrine carcinoma of the skin(NOOR-oh-EN-doh-krin KAR-sih-NOH-muh â¦) A rare type of cancer that forms on or just beneath the skin, usually in parts of the body that have…
neuroendocrine tumor(NOOR-oh-EN-doh-krin TOO-mer) A tumor that forms from cells that release hormones in response to a signal from the nervous system.
neuroepithelial(NOOR-oh-eh-pih-THEE-lee-ul) Having to do with tissue made up of sensory cells, such as tissue found in the ear, nose, and tongue.
NeuroepitheliumA specialized epithelial structure that forms the termination of a nerve of a special sense, i.e.
neurofibroma(NOOR-oh-fy-BROH-muh) A benign tumor that develops from the cells and tissues that cover nerves.
neurofibromatosisAn inherited progressive disorder in which tumors form on peripheral nerves. The tumors can be severely disfiguring and can also result in loss of hearing…
neurofibromatosis type 1(NOOR-oh-FY-broh-muh-TOH-sis tipe 1) A rare genetic condition that causes brown spots and tumors on the skin, freckling in skin areas not exposed to the…
neurofibromatosis type 2(NOOR-oh-FY-broh-muh-TOH-sis tipe 2) A genetic condition in which tumors form on the nerves of the inner ear and cause loss of hearing and balance.
neuroglia(noor-OH-glee-uh) Any of the cells that hold nerve cells in place and help them work the way they should.
neuroleptic malignant syndrome(NOOR-oh-LEP-tik muh-LIG-nunt SIN-drome) A life-threatening condition that may be caused by certain drugs used to treat mental illness, nausea, or…
neurologic(NOOR-oh-LAH-jik) Having to do with nerves or the nervous system.
neurological exam(NOOR-oh-LAH-jih-kul eg-ZAM) A series of questions and tests to check brain, spinal cord, and nerve function.
neurologist(noo-RAH-loh-jist) A doctor who specializes in the diagnosis and treatment of disorders of the nervous system.
neuroma(NOOR-oh-ma) A tumor that arises in nerve cells.
Neuron(NOOR-on) A type of cell that receives and sends messages from the body to the brain and back to the body.
NeuronsNerve cells, the structural and functional unit of the nervous system. A neuron consists of a cell body and its processes-an axon and one or more…
neuropathologist(NOOR-oh-puh-THAH-loh-jist) A pathologist who specializes in diseases of the nervous system.
neuropathy(noo-ROP-uh-thee) A nerve problem that causes pain, numbness, tingling, swelling, or muscle weakness in different parts of the body.
neuropeptideA member of a class of protein-like molecules made in the brain. Neuropeptides consist of short chains of amino acids, with some functioning as…
neuropsychology(NOOR-oh-sy-KAH-loh-jee) The study of how the brain and central nervous system are related to behavior.
neuroradiologist(NOOR-oh-RAY-dee-AH-loh-jist) A doctor trained in radiology who specializes in creating and interpreting pictures of the nervous system.
NeurosphereA primitive neural tissue that arises when embryonic stem cells are grown in certain culture conditions.
neurosurgeon(NOO-ro-SER-jun) A doctor who specializes in surgery on the brain, spine, and other parts of the nervous system.
neurotoxicity(NOOR-oh-tok-SIH-sih-tee) The tendency of some treatments to cause damage to the nervous system.
neurotoxin(NOOR-oh-TOK-sin) A substance that is poisonous to nerve tissue.
neurotransmitter(NOOR-oh-tranz-MIH-ter) A chemical that is made by nerve cells and used to communicate with other cells, including other nerve cells and muscle cells.
neurotropismAn ability to invade and live in neural tissue. This term is usually used to describe the ability of viruses to infect nerve tissue.
NeutralA term drivers use when referring to how their car is handling. When a car is neither loose nor pushing (tight).
neutral detergent fiberOrganic matter that is not solubilized after one hour of refluxing in a neutral detergent consisting of sodium lauryl sulfate and EDTA at pH 7.
neutral direct-current telegraph systemA telegraph system in which (a) current flows during marking intervals and no current flows during spacing intervals for the transmission of signals over…
neutral groundAn intentional ground applied to the neutral conductor or neutral point of a circuit, transformer, machine, apparatus, or system.
Neutral LineThe line that separates longitudinal magnetic fields of opposite polarity.
neutral mutationA mutation that changes the nucleotide sequence of a gene, but has no observable effect on the fitness of the organism.
neutral operationA method of teletypewriter operation in which marking signals are formed by current pulses of one polarity, either positive or negative, and spacing…
Neutral Particle Beam (NPB)An energetic beam of neutral particles that is generally used to damage electronics.
neutral relayA relay in which the direction of movement of the armature does not depend upon the direction of the current in the circuit controlling the armature.
Neutral StabilityAn atmospheric condition that exists in unsaturated air when the environmental lapse rate equals the dry adiabatic rate, or in saturated air when the…
neutral theoryThe theory that much of evolution has been primarily due to random drift of neutral mutations.
NeutrinoA lepton with no electric charge. Neutrinos participate only in weak and gravitational interactions and are therefore very difficult to detect.
NeutronA baryon with electric charge zero; it has the basic structure of two down quarks and one up quark (held together by gluons).
Neutron probeAn instrument used to estimate soil moisture. Relates the rate of attenuation in pulsed neutron emissions to soil water content.
neutropenia(noo-troh-PEE-nee-uh) An abnormal decrease in the number of neutrophils, a type of white blood cell.
neutrophil(NOO-tro-fil) A type of white blood cell.
nevoid basal cell carcinoma syndrome(NEE-voyd BAY-sul SEL KAR-sih-NOH-muh SIN-drome) A genetic condition that causes unusual facial features and disorders of the skin, bones, nervous system…
nevus(NEE-vus) A benign (noncancerous) growth on the skin that is formed by a cluster of melanocytes (cells that make a substance called melanin, which gives…
new customer premises equipmentAll customer premises equipment not in service or in the inventory of a regulated telephone utility as of December 31, 1982.
New Drug Application (NDA)When the sponsor of a new drug believes that enough evidence on the drug's safety and effectiveness has been obtained to meet FDA's requirements for…