ESR
Initialism of equivalent series resistance.
Entries starting with E
242 entries.
ESRIN
Initialism of European Space Research Institute.
ESS
Initialism of electronic switching system.
essential mesh
In mesh analysis: a simple mesh (loop) which does not contain any other meshes.
essential prime implicant
A prime implicant on a Karnaugh map which "covers" at least one 1 which is not covered by any other prime implicant.
essexite
A form of silica-undersaturated pyroxene gabbro, containing nepheline and orthoclase as essential constituents.
estate
nounAutomotive
Ellipsis of estate car (“station wagon”).
ESTEC
Initialism of European Space Research and Technology Centre.
ET
Initialism of electronic ticket.
ETCS
nameRail equipment
Initialism of European Train Control System, a signalling, control and train protection system, especially for high-speed lines.
etendue
A conserved property of the light in an optical system which characterizes how "spread out" the light is in terms of angle and area: it is the product of its cross-sectional area (normal to the direction of propagation) and the solid angle it subtends.
Ethernet card
A hardware component that connects a computer or other device to an Ethernet network.
etiolated
adjectiveAgricultural equipment
Of a plant or part of a plant: pale and weak because of sunlight deprivation or excessive exposure to sunlight.
Eton collar
A broad, stiff, white collar, typically about twice the size of a standard man's shirt collar.
ETSI
Initialism of European Telecommunication Standards Institute.
Eurobalise
nounRail equipment
A specific kind of balise used in the European Train Control System.
European plan
A hotel rate that includes accommodation, but not meals.
EV
nounAutomotive
Initialism of electric vehicle (a type of road vehicle).
evanescent
adjectiveElectrical engineering
Of an oscillating electric or magnetic field: not propagating as an electromagnetic wave but having its energy spatially concentrated in the vicinity of its source.
EVAP
nounAutomotive
Abbreviation of evaporative emission control system.
eventscape
A location viewed as the venue for a public event.
everlasting
nounManufacturing
Synonym of lasting (“(uncountable) a durable, plain, woven fabric formerly used for making clothes and for the uppers of women's shoes; (countable) a quantity of such fabric”).
EVM
Initialism of error vector magnitude.
ex
adjectiveRail equipment
the place the train originated from or called at prior to the present location.
exajoule
An SI unit of energy equal to 10¹⁸ joules. Symbol: EJ
exakatal
An SI unit of catalytic activity equal to 10¹⁸ katals. Symbol: E
exametre
An SI unit of length equal to 10¹⁸ metres. Symbol: Em
exanewton
An SI unit of force equal to 10¹⁸ newtons.
exasecond
An SI unit of time equal to 10¹⁸ seconds. Symbol: Es. (= 31 709 800 000 years, which is more time than has elapsed in the Universe, that is, since the Big Bang [about 13 800 000 000 years].)
excelsior
The size of type between Norse and brilliant, standardized as 3-point.
excess baggage
Luggage which exceeds the allowable size or weight (as for an airline flight or train trip), and for which an extra fee must therefore be paid.
exchange
The portion of a telephone number that represents (or formerly represented) a central office.
excursion
An occurrence where an aircraft runs off the end or side of a runway or taxiway, usually during takeoff, landing, or taxi.
excursion fare
A fare for travel by land, air, or water which is less expensive than the regular fare, and which usually depends on special conditions, such as round-trip travel, payment in advance, or restrictions in duration of stay.
exhaust system
nounAutomotive
The subsystem of an engine that takes the products of the combustion chamber through a catalytic converter and silencer to the final pipe that releases the gases to the air.
exhaust velocity
The speed with which the exhaust gases leave the rocket engine.
exit
A minor road (such as a ramp or slip road) which is used to leave a major road (such as an expressway, highway, or motorway).
exit code
A sequence of digits that must be dialled before the target number when placing an international call from a given country.
exit node
A server that allows traffic to leave a secure network and enter the public internet.
exogangue
Gangue that is located outside phosphatic grains.
expansion cleat
nounConstruction
A cleat designed to accommodate thermal movement of metal roof panels.
expansion joint
nounConstruction
A structural separation between two building elements that allows free movement between the elements without damage to the system.
explicit modeling
nounManufacturing
A type of digital modeling that defines surfaces, edges, nodes, and points either via solid models or via wireframe models.
exposure
The amount of sun, wind etc. experienced by a particular site.
expression
nounManufacturing
The act of pressing or squeezing out.
extension
A numerical code used to indicate a specific telephone in a telecommunication network.
extension cord
An electrical cord with a plug one end, and a single socket or a multi-port socket at the other end, used for powering one or more devices at a distance, too far from the wall outlet to be reached by the normal cords of the device or devices.
extension reel
An extension lead that rolls up, usually into the socket end, which in some cases has more than one socket on it (often 2 or 4).
extra extra extra large
adjectiveManufacturing
That is extra extra extra large (the manufactured size).
extra extra extra small
adjectiveManufacturing
That is extra extra extra small (the manufactured size).
extra extra large
adjectiveManufacturing
That is extra extra large (the manufactured size).
extra extra small
adjectiveManufacturing
That is extra extra small (the manufactured size).
extra large
adjectiveManufacturing
That is extra large (the manufactured size).
extra small
adjectiveManufacturing
That is extra small (the manufactured size).
extractors
nounAutomotive
A set of pipes fitted to the exhaust ports of an automotive engine, designed to increase its power output (essentially by altering gas pressures to get more fuel through it). https://web.archive.org/web/20060820191056/http://moonahmufflers.com.au/extractors/index.html
extremely low frequency
The band of radio frequencies from 3 to 30 hertz.
eye
The foremost part of a ship's bows; the hawseholes.
eye pattern
An oscilloscope display of a data signal passed through a transmission line, clocked synchronously to the data symbols; used to analyze the quality of transmission.
eyebar
nounConstruction
A straight bar, usually of metal, with a hole or "eye" at each end to allow it to be fixed to other components.
eyebrow
nounConstruction
A dormer, usually of small size, whose roof line over the upright face is typically an arched curve, turning into a reverse curve to meet the horizontal line at either end.