El
Any one of several specific elevated railways.
Entries starting with E
242 entries.
elaboration
The process of taking a parsed tree of an abstract integrated circuit definition in a language such as Verilog and creating a hierarchy of module instances that ends with primitive (atomic) gates and statements.
electric current
The net charge that passes through some cross-section of a conducting material (in one direction), per unit time.
electric field
A region of space around a charged particle, or between two voltages, which exerts a force on charged objects in its vicinity.
electric flux
The measure of flow of the electric field through a given area.
electric locomotive
A locomotive with its motors powered by electricity from overhead lines or (less commonly) from a third rail or on-board energy storage such as a battery or a supercapacitor.
electric main
The principal or main electrical supply line that distributes electricity from the utility grid to a building or home.
electric multiple unit
nounRail equipment
A multiple unit train powered by electricity, abbreviated EMU.
electric potential
The potential energy per unit charge at a point in a static electric field.
electric power transmission
The movement of large amounts of electrical energy from the site of generation to a substation.
electrical bus
Synonym of bus (“an electrical conductor or interface serving as a common connection for two or more circuits or components”)
electrical fault
A defect that forms from a fault current.
electrochemical
adjectiveIndustrial chemistry
Of, or relating to a chemical reaction brought about by electricity.
electrochemical equivalent
The mass of a given chemical element transported by a specific quantity of electricity.
electrochemical series
A list of the metals in order of their electronegativity (and hence their reactivity).
electrofinish
verbMetallurgy
To apply an electrochemical treatment to (a metal surface).
electrofinishing
nounMetallurgy
An electrochemical treatment of a metal surface.
electrogyro
A unit that works first as a motor, taking energy from an electrical supply and converting it into kinetic energy which is stored in flywheels; when a vehicle so fitted moves, the energy stored is reconverted to electricity and supplied to traction motors.
electrolytic capacitor
A capacitor that uses an electrolyte as one of its capacitative plates.
electromechanical computer
An early type of computer that used electromagnetic relays.
electron multiplier
A vacuum-tube structure that multiplies incident charges by means of secondary emission.
electron tube
Any of several electronic devices that control electron current through vacuum, gas or vapor between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.
electronic stability control
nounAutomotive
An electronic system that assists in the control of car stability.
electrophoresis
The migration of electrically charged molecules through a medium under the influence of an electric field.
electrostatic
adjectiveElectrical engineering
of, relating to, or produced by electrostatics or static electricity
electrostatic force
Coulomb force, the attraction or repulsion between particles based on their electric charge.
electrotype
a plate, made by electroplating a mold, such as used in letterpress printing
elephant race
A situation in which one truck tries to overtake another at a slightly higher speed, blocking the road for passenger car drivers behind.
elevated railway
nounRail equipment
A rapid transit railway with tracks above street level on a viaduct or other elevated structure.
elevator
A control surface of an aircraft responsible for controlling the pitching motion of the machine.
elevon
A movable surface at the trailing edge of a tailless airplane (such as the space shuttle) that provides pitch and roll control.
ELF
Initialism of extremely low frequency.
ELFEXT
Initialism of equal-level far-end crosstalk.
eLISA
Initialism of evolved Laser Interferometer Space Antenna, a proposed European Space Agency mission designed to detect and accurately measure gravitational waves.
elliptic spring
A curved leaf spring of different styles.
ELSS
Initialism of extravehicular life support system.
elvan
The rock of an elvan vein, or the vein itself.
EM
Initialism of energy management.
EMA
Initialism of Excess Milage Allowance.
embrechite
A type of migmatite where the crystal structures of the rock before metamorphism are partially preserved.
EMC
Initialism of electromagnetic compatibility.
emerald
A size of type between nonpareil and minion, standardized as 6½-point.
emerize
verbManufacturing
To pass (fabric) over emery-covered rollers to give it a soft finish.
EMI
Initialism of external memory interface.
Emirates
One of the two flag carrier airlines of the United Arab Emirates
emitter
One terminal of a bipolar transistor (BJT).
emitter-coupled logic
A logic family that achieves high speed by using an overdriven BJT differential amplifier with single-ended input.
eMMC
An embedded (“integrated, non-removable”) MMC (“MultiMediaCard”). An electronic memory module designed to be integrated into devices instead of removable card, functioning as a storage device or main drive.
EMU
nounAutomotive
Initialism of engine management unit.
enable
To put a circuit element into action by supplying a suitable input pulse.
end-node
A device that connects to a network and is the endpoint for data communication.
endmill
nounMetalworking
A type of milling machine: a cutter (cutting tool used in machining) with cutting edges on both the end and sides.
endogangue
Gangue that is located inside phosphatic grains.
endorsement
An instructor's signed acknowledgement of time practising specific flying skills.
endpoint
The entity at one end of a connection.
engaged tone
An audible signal to the calling party that indicates failure to complete the requested connection; a busy signal.
engine bay
nounAutomotive
The section in a vehicle where the engine is situated.
engine braking
nounAutomotive
The act of slowing down a motor vehicle using the retarding forces of the engine rather than the normal braking mechanism.
engine cleaner
An employee who cleans railway locomotives, especially steam locomotives in the days of steam.
engine house
A building housing one or more engines.