on-demand instanceAn Amazon EC2 pricing option that charges you for compute capacity by the hour with no long-term commitment.
on-demand streamA previously recorded media stream that users can request at a time most convenient to them. Users can rewind and fast-forward on-demand media streams.
On-district storageSmall water storage facilities located within the boundaries of an irrigation entity, including reregulating reservoirs, holding ponds, or other new…
On-farmActivities (especially growing crops and applying irrigation water) that occur within the legal boundaries of private property.
On-farm irrigation efficiencyThe ratio of the volume of water used for consumptive use and leaching requirements in cropped areas to the volume of water delivered to a farm (applied…
on-hookIn telephony, the condition that exists when an operational telephone, or other user instrument, is not in use.
on-hook signalIn telephony, of a circuit, a signal indicating a disconnect, unanswered call, or an idle condition.
on-hook stateA state in which the customer installation (CI) presents a high-resistance path at the network interface. [T1.Rpt37-1994]
On-LineA unit that is operational, not dormant, but is not participating with on-going functions.
On-line AttackAn attack against an authentication protocol where the attacker either assumes the role of a claimant with a genuine verifier or actively alters the…
on-line authentication certificateA particular form of authentication information, certified by a trusted authority, which may be used for authentication following direct interaction with…
on-line cryptosystem[A] cryptosystem in which encryption and decryption are performed in association with the transmitting and receiving functions. [INFOSEC-99]
on-line data replicationData replication by copying to another location that is immediately accessible.
On-Line ReviewThe culling process produces a dataset of potentially responsive documents which are then reviewed for a final selection of relevant or responsive…
On-line StorageThe storage of electronic data as fully accessible information in daily use on the network or elsewhere.
On-PeakA block of (usually 16) hours in each week-day when demand is at its peak. On-peak definitions for physical electricity vary by North America Electric…
On-Peak EnergyEnergy supplied during periods of relatively high system demands as specified by the supplier.
on-premises extensionAn extension telephone, PBX station, or key system station located on property that is contiguous with that on which the main telephone, PBX, or key…
on-premises wiringCustomer-owned metallic or optical-fiber communications transmission lines, installed within or between buildings.
On-scene coordinator (OSC)The Federal official predesignated by the EPA or Coast Guard to coordinate and direct Federal removal efforts at the scene of an oil or hazardous…
on-screen buttonA pictorial representation of a pushbutton on a display screen, which functions as a binary control, for example, on/off. [T1.232-1996]
On-site ExtractionThe extraction of high volumes of data from backup tapes at a client site (no risk of loss of original evidence).
On-Site GenerationGeneration of energy at the location where all or most of it will be used.
On-site ProgrammingEducational or interpretive activities conducted by agency personnel within agency’s unit jurisdictional boundary.
on-the-airIn radio communications systems, pertaining to a station that is transmitting a carrier, whether or not the carrier is modulated. 2.
On-themerefers to content specific to a particular topic
Oncaspar(ON-kah-spar) A drug used to treat acute lymphoblastic leukemia (ALL). It is a form of the drug asparaginase that is linked to a substance called PEG…
onco-mouseA mouse that has been genetically modified to incorporate an oncogene, which acts as an animal model for studies of human cancer.
oncogeneA gene that normally directs cell growth. If altered, an oncogene can promote or allow the uncontrolled growth of cancer.
OncogenesisThe progression of cytological, genetic, and cellular changes that culminate in a malignant tumor.
oncologist(on-KAH-loh-jist) A doctor who specializes in treating cancer. Some oncologists specialize in a particular type of cancer treatment.
oncology nurse(on-KAH-loh-jee...) A nurse who specializes in treating and caring for people who have cancer.
oncology pharmacy specialist(on-KAH-loh-jee FAR-muh-see SPEH-shuh-list) A person who works with an oncologist to prepare anticancer drugs.
oncolysate(on-KOL-ih-sate) An extract made from cancer cells.
oncolysis(on-KOL-ih-sis) The lysis (breakdown) of cancer cells. This can be caused by chemical or physical means (for example, strong detergents or high-energy…
oncolytic virotherapy(ON-koh-LIH-tik VY-roh-THAYR-uh-pee) Treatment using an oncolytic virus (a virus that infects and breaks down cancer cells but not normal cells ).
oncolytic virus(ON-koh-LIH-tik VY-rus) A type of virus that infects and lyses (breaks down) cancer cells but not normal cells.
oncolytic virus therapy(ON-koh-LIH-tik VY-rus THAYR-uh-pee) Treatment using an oncolytic virus (a virus that infects and breaks down cancer cells but not normal cells ).
OnconaseA substance being studied in the treatment of cancer. It is a type of ribonuclease enzyme. Also called ranpirnase.
Oncophage(ON-koh-fayj) A vaccine made from a patient's tumor cells that may help the body's immune system find and kill cancer cells.
Oncovin(ON-koh-vin) A drug used to treat acute leukemia. It is used in combination with other drugs to treat Hodgkin disease, non-Hodgkin lymphoma…
oncovirusA class of retroviruses that cause a cell to become cancerous. See also cell, retrovirus, cancer, gene
ondansetron(on-DAN-seh-tron) The active ingredient in a drug used to treat nausea and vomiting caused by cancer treatment.
ondansetron hydrochloride(on-DAN-seh-tron HY-droh-KLOR-ide) The active ingredient in a drug used to treat nausea and vomiting caused by cancer treatment.
One paira hand containing one pair of cards of the same value, irrespective of suit
One-GapA hold'em starting hand with two cards two apart in rank. Examples: J9s, 64.
one-linerAn entire computer program crammed into one line of text.
one-part codeCode in which plain text elements and their accompanying code groups are arranged in alphabetical, numerical, or other systematic order, so one listing…
one-time pad1. [ A] manual one-time cryptosystem produced in pad form. [INFOSEC-99] 2. The one time pad is the ONLY encryption scheme that can be proven to be…
One-to-manyA relate in which one record in a table is related to many records in another table.
one-to-many-relateA type of relate connecting a unique value in one file to many records (that have the same value) in another file.
One-to-oneA phrase used in the biometrics community to describe a system that compares one reference to one enrolled reference to make a decision.
one-way communicationCommunication in which information is always transferred in only one preassigned direction.
one-way encryption1. A method of encryption used where a requirement exists to prevent the decryption of the cipher text, given full information about the algorithm [CESG].
one-way function1. A transfer function f which is relatively easy to compute, but for which, for a general value, y , within the selected range, it is computationally…
One-Way Hash AlgorithmHash algorithms which map arbitrarily long inputs into a fixed-size output such that it is very difficult (computationally infeasible) to find two…
one-way messagingA method of transmitting messages without having to block until a response is received.
one-way regulatorA component which allows the transfer of information from one system to another, whilst providing a high level of confidence that information flow in the…
one-way trunkA trunk between two switching centers, over which traffic may be originated from one preassigned location only.
one-way trustA trust relationship between two domains in which only one of the two domains trusts the other domain.
one-way trust relationshipA trust relationship between two domains in which only one of the two domains trusts the other domain.
one-way-only channelA channel capable of transmission in only one direction, which cannot be reversed. Synonym unidirectional channel.
One-Year Grace PeriodThe one-year period that starts on the date that an invention is used publicly, offered for sale, patented or published anywhere in the world during which…
Ongoing Visual Inspection (OVI)The Ongoing Visual Inspection Checklist identifies specific visual inspection items that should regularly receive special attention.
OnlineWhen computers and other devices are connected to the network.
online accessDirect access to data that does not involve file transfer.
Online BankingA service that allows an account holder to obtain account information and manage certain banking transactions through a personal computer via the…
Online brokerage firmTo buy and sell securities online, you set up an account with an online brokerage firm. The firm executes your orders and confirms them electronically.
online computer systemA computer system that is a part of, or is embedded in, a larger entity, such as a communications system, and that interacts in real or near-real time…
online shoppingA process in which images or listings of goods and services are viewed remotely via electronic means, e.g.
online software upgradeIn computer networking, a software modification or installation performed remotely from an originating site (e.g.
Online tradingIf you trade online, you use a computer and an Internet connection to place your buy and sell orders with an online brokerage firm.
Onroad mobile source (emissions)Any mobile source of air pollution such as cars, trucks, motorcycles, and buses that travels on roads and highways.
onset of actionThe length of time it takes for a medicine to start to work.
Onshore BreezeA wind that blows from a body of water towards the land. Also known as a seabreeze
Onshore FlowOccurs when air moves from sea to land, and is usually associated wtih increased moisture.
Onsite Coordinator (OSC)For Reclamation-operated facilities, the OSC is any employee discovering hazardous or suspected hazardous waste on Reclamation lands.
Onsite Extractionthe extraction of high volumes of data from backup tapes at a client site (no risk of loss of original evidence) â RenewData patent-pending…
onsite storageStorage of records on the premises of the organization See also offsite storage.
OntakA substance used to treat cutaneous T-cell lymphoma when other treatments have not worked.
ONTAPOpen Network Technology for Appliance Products. Generally referred to as Data ONTAP.
ontogenyDevelopmental life history of an organism.
OntologyAn ontology defines the common words and concepts (meanings) used to describe and represent an area of knowledge, and so standardizes the meanings.
ONYX-015A modified cold virus that selectively grows in and destroys certain types of cancer cells and leaves normal cells undamaged.
oobe.xml fileA content file that can be used to store content to display in the customizable areas of Windows Welcome, Welcome Center, and the Get Connected Wizard.
OocystA stage in the life cyle of malaria parasites, oocysts are rounded structures located in the outer wall of the stomach of mosquitoes.