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- Accelerator: Accelerators are ring-shaped or linear devices that accelerate charged particles. More powerful than any other microscope, high-energy accelerators allow physicists to study matter at the smallest...more
- accelerator: Accelerators are ring-shaped or linear devices that accelerate charged particles. More powerful than any other microscope, high-energy accelerators allow physicists to study matter at the smallest...more
- accent lighting: light directed to highlight an object or to attract attention to an area. more
- Acceptable Daily Intake(ADI): Estimate of the amount of a substance in food and/or drinking water, expressed on a body weight basis that can be ingested daily over a lifetime without appreciable health risk to the consumer...more
- Acceptance Testing (AT): The testing performed by a user to determine that an automated system (equipment or software) for a specific task or environment, e.g., a translator for a specific application and interchange...more
- Acceptor: An impurity that can make a semi-conductor P-type by causing the absence of electrons in the conduction band, called "holes". These "holes" are carriers of positive charge. See donor.more
- acceptor: 1. any species that combines with or accepts other material.any species that combines with or accepts other material. 2. a chemical in which the reaction rate with another chemical increases...more
- access: 1. the freedom, ability, or legal right to pass from one point to another, as on a public right of way or on the sea.the freedom, ability, or legal right to pass from one point to another, as on...more
- access road: 1. a secondary road that allows movement on or off a highway or expressway.a secondary road that allows movement on or off a highway or expressway. 2. any thoroughfare that allows travel to an...more
- access tunnel: A tunnel furnished for an access road. more
- Accession: Acquiring title to additions or improvements to real property as a result of the annexation of fixtures or the accretion of alluvial deposits along the banks of streams. Another definitions:...more
- Accident (accidental): Any incident involving a significant and unintended release of genetically modified microorganisms in the course of their contained use which could present an immediate or delayed hazard to human...more
- Accidental release: Accidental release the unintentional discharge of a microbiological agent (i.e., microorganism or virus) or eukaryotic cell due to a failure in the containment system. more
- accouplement: The proximate placement of a pair of structural elements, such as two columns. more
- accretion: 1. the gradual buildup of land on a shore over time as a result of natural forces, such as the deposition of sediment by wave action, tides, or currents.the gradual buildup of land on a shore...more
- Accumulator:: The storage ring in which successive pulses of antiprotons are collected in order to create an antiproton beam of reasonable intensity for colliding beams physics. The Accumulator is designed to...more
- ACD: (Automatic Call Distributor) - A telephone system that manages incoming calls and distributes them based on caller commands or preferences. An ACD is a staple of call centers that need to direct...more
- acequia: (crop science) An irrigation ditch or canal. more
- acetate process: A process in which cellulose is combined with acetic acid or acetic anhydride and sulfuric acid catalyst to make cellulose acetate resin or fiber. more
- Aceton: An organic compound made of oxygen, carbon and hydrogen (chemical formula CH3COCH3). It is a colorless, very volatile, extremely flammable liquid miscible with water. It is used as a solvent and...more
- Acid: pH is a measure of the concentration of protons (H + ) in a solution and, therefore, its acidity or alkalinity . The concept was introduced by S.P.L. Sřrensen in 1909. The p stands for the...more
- acid conductor: The equipment used to heat and evaporate water from hydrolyzed acid or to distill water under a partial vacuum. more
- Acid deposition: Rain, snow, or any other deposition of water with an acidity greater than normal. As water falls through the air it absorbs carbon dioxide and forms carbonic acid, which has a pH of about 5.6....more
- acid gases: The hydrogen sulfide and carbon dioxide emitted in refinery gases that form corrosive acids when combined with moisture. more
- Acid rain: Falling rain (or snow) which has become acidic ( pH less than 5.6) as a result of its combination with gaseous pollutants, such as sulphur dioxide ( SO 2 ) and nitrogen oxides ( NO x )....more
- acid sludge: The gummy acid or oily residue that separates after petroleum oil has been treated with sulfuric acid to remove impurities. more
- acid-recovery plant: A plant, in certain refineries, for separating sludge acid into tar, acid oil, and weak sulfuric acid, with the capability of reconcentration. more
- Acidic: Acidic is when the concentration of the soil solution has a pH below 7.0.
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- Acidity: The level of hydrogen ion concentration in a solution. Acidity is measured on the pH scale. The pH scale is a logarithmic scale. The majority of readings go from 1 (very high acidity) to 14 (very...more
- ACIS: Acoustic Controlled Induction System. Admission system to control noise. Toyota. more
- acme harrow: a type of harrow having long twisted blades that project toward the rear, used to stir the soil and to cut clods. Also, BLADE HARROW. more
- ACNET:: Accelerator Control NETwork. A system of computers that monitors and controls the accelerator complex. Interfaced to users through consoles in the MCR and elsewhere, including at the Captain and...more
- Acquisition Manager (AM): The system/equipment program manager, the program manager's staff, and other DoD officials responsible for determining contract requirements for the generation, acquisition, and use of defense...more
- Acquitted: An acquittal is a signal (general terms a message signal is a simplified and generally coded. It exists in the form ...) indicating a logical operation has been requested or not taken into account....more
- Acre-foot: (crop science) The volume of water that would more
- acreage: the extent of an area of farmland as measured in acres. more
- acreage: the extent of an area of farmland as measured in acres. more
- Acrobat: Family of computer programs created by Adobe Systems Inc. that allow you to create and view Portable Document Format (PDF) files on any PC, Mac or UNIX computer. Acrobat Distiller is used to...more
- acropolis: 1. The fortified upper part of an ancient Greek city, usually containing temples and other public buildings.the fortified upper part of an ancient Greek city, usually containing temples and...more
- acroterion: 1. a pedestal at the peak or corners of a pediment, used to support a statue or other ornament.a pedestal at the peak or corners of a pediment, used to support a statue or other ornament. 2....more
- ACS (engine): Advanced Control System. Toyota. The supervisor of the Toyota Prius hybrid vehicle, known as ACS, manages the operation of thermal and electric motors, as well as the generator. Depending on the...more
- ACT (overhead camshaft): Overhead camshafts. Camshaft in the cylinder head directly above the valve. It operates without the use of intermediate rocker. English: overhead camshaft (OHC). Saab Enginemore
- ACT (overhead camshaft): Overhead camshafts. Camshaft in the cylinder head directly above the valve. It operates without the use of intermediate rocker. English: overhead camshaft (OHC).more
- Actin: Actin is a muscle protein localized in the I-band of the myofibril; acting along with myosin, it is responsible for contraction and relaxation of muscle.more
- Acting: A person who holds a position temporarily while a permanent replacement is being sought. Used in ST organizational announcements.more
- Action: A set of control instructions prompting a PLC to perform a certain control
function during the execution of a sequential function chart step.more
- ACTIVATED CARBON: By Harry Marsh , North Shields, UK Francisco Rodríguez Reinoso , The University of Alicante, Spain. Description Recent years have seen an expansion in speciality uses of activated...more
- Activated carbon A: material produced by partially burning a carbon-based material and then increasing its absorptive capacity by steam treatment, which creates a large surface area. The product is used to adsorb...more
- Activated sludge: In biological wastewater treatment, activated sludge refers to either the active population of micro-organisms , including bacteria and other living organisms such as fungi and protozoa...more
- Active Component: A (non-mechanical) circuit component that has gain or switches current flow, such as a diode,transistor, etc. more
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