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device

/dɪˈvaɪs/
/dɪˈvaɪs/
IPA guide

Other forms: devices

A device is really anything that has a specific use. It might be a tool or object, or a plan that is devised to accomplish something. If it has a purpose, it is a device.

A device is a noun that can be used to describe anything, simple or complex, that is used for a specific purpose. You might have one device for opening bottles, and another for opening cans. You probably even have a device for turning on your TV. While these have specific names (bottle opener, can opener, remote), you can cover each with the generic term device. We can see its root in the Old French word devis, which meant “purpose” or “contrivance.”

Definitions of device
  1. noun
    an instrumentality invented for a particular purpose
    “the device is small enough to wear on your wrist”
    “a device intended to conserve water”
    see moresee less
    types:
    acoustic device
    a device for amplifying or transmitting sound
    adapter, adaptor
    device that enables something to be used in a way different from that for which it was intended or makes different pieces of apparatus compatible
    afterburner
    a device injects fuel into a hot exhaust for extra thrust
    agglomerator
    a device that causes material to gather into rounded balls
    aerofoil, airfoil, control surface, surface
    a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight
    alarm, alarm system, warning device
    a device that signals the occurrence of some undesirable event
    appliance, contraption, contrivance, convenience, gadget, gismo, gizmo, widget
    a small mechanical device or tool
    applicator, applier
    a device for applying a substance
    aspergill, aspersorium
    a short-handled device with a globe containing a sponge; used for sprinkling holy water
    automatic pilot, autopilot, robot pilot
    a navigational device that automatically keeps ships or planes or spacecraft on a steady course
    bait, decoy, lure
    something used to lure fish or other animals into danger so they can be trapped or killed
    billiard marker
    a device for keeping the score in a game of billiards
    bird feeder, birdfeeder, feeder
    an outdoor device that supplies food for wild birds
    blower
    a device that produces a current of air
    bootjack
    has V-shaped notch for pulling off boots
    breathalyser, breathalyzer
    a device that measures chemicals (especially the alcohol content) in a person's expired breath
    breathing apparatus, breathing device, breathing machine, ventilator
    a device that facilitates breathing in cases of respiratory failure
    bubbler
    any of various devices in which air or some other gas is bubbled through a liquid
    buffer, fender
    a cushion-like device that reduces shock due to an impact
    catapult, launcher
    a device that launches aircraft from a warship
    battery charger, charger
    a device for charging or recharging batteries
    clip-on
    a device (as an earring, sunglasses, microphone etc.) that is attached by clips
    comb
    a flat device with narrow pointed teeth on one edge; disentangles or arranges hair
    baby's dummy, comforter, pacifier, teething ring
    device used for an infant to suck or bite on
    conductor
    a device designed to transmit electricity, heat, etc.
    converter, convertor
    a device for changing one substance or form or state into another
    corer
    a device for removing the core from apples
    corrective, restorative
    a device for treating injury or disease
    crusher
    a device that crushes something
    cryptograph
    a device for deciphering codes and ciphers
    cutoff
    a device that terminates the flow in a pipe
    dampener, moistener
    a device that dampens or moistens something
    damper, muffler
    a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations
    deflector
    a device intended to turn aside the flow of something (water or air or smoke etc)
    dental appliance
    a device to repair teeth or replace missing teeth
    depressor
    a device used by physician to press a part down or aside
    detector, sensing element, sensor
    any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner
    diestock
    a device that holds the dies that cut external threads on metal cylinders
    drive
    (computer science) a device that writes data onto or reads data from a storage medium
    drop forge, drop hammer, drop press
    device for making large forgings
    elastic device
    any flexible device that will return to its original shape when stretched
    electrical device
    a device that produces or is powered by electricity
    electronic device
    a device that accomplishes its purpose electronically
    energiser, energizer
    a device that supplies electrical energy
    exercise device
    a device designed to provide exercise for the user
    explosive device
    device that bursts with sudden violence from internal energy
    fan
    a device for creating a current of air by movement of a surface or surfaces
    filter
    device that removes something from whatever passes through it
    asphyxiator, extinguisher, fire extinguisher
    a manually operated device for extinguishing small fires
    flare
    a device that produces a bright light for warning or illumination or identification
    fumigator
    a device that generates a gas for the purpose of disinfecting or eradicating pests
    gas fixture
    a device to convey illuminating gas from the pipe to the gas burner
    groover
    a device that makes grooves by cutting or punching
    guard, safety, safety device
    a device designed to prevent injury or accidents
    heater, warmer
    device that heats water or supplies warmth to a room
    heat exchanger
    device that transfers heat from one liquid to another without allowing them to mix
    holding device
    a device for holding something
    horn
    a device having the shape of a horn
    foil, hydrofoil
    a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through
    imprint
    a device produced by pressure on a surface
    indicator
    a device for showing the operating condition of some system
    instrument
    a device that requires skill for proper use
    ignition interlock, interlock
    a device that prevents an automotive engine from starting
    interrupter
    a device for automatically interrupting an electric current
    jig
    a device that holds a piece of machine work and guides the tools operating on it
    key
    metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated
    keyboard
    device consisting of a set of keys on a piano or organ or typewriter or typesetting machine or computer or the like
    Kinetoscope
    a device invented by Edison that gave an impression of movement as an endless loop of film moved continuously over a light source with a rapid shutter; precursor of the modern motion picture
    doorknocker, knocker, rapper
    a device (usually metal and ornamental) attached by a hinge to a door
    lift
    a device worn in a shoe or boot to make the wearer look taller or to correct a shortened leg
    lifting device
    a device for lifting heavy loads
    igniter, ignitor, light, lighter
    a device for lighting or igniting fuel or charges or fires
    machine
    any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks
    magnet
    (physics) a device that attracts iron and produces a magnetic field
    mechanism
    device consisting of a piece of machinery; has moving parts that perform some function
    memory device, storage device
    a device that preserves information for retrieval
    instrument, musical instrument
    any of various devices or contrivances that can be used to produce musical tones or sounds
    nest egg
    device consisting of an artificial egg left in a nest to induce hens to lay their eggs in it
    noisemaker
    a device (such as a clapper or bell or horn) used to make a loud noise at a celebration
    optical device
    a device for producing or controlling light
    override
    a manually operated device to correct the operation of an automatic device
    paper feed
    a device for inserting sheets of paper into a printer or typewriter
    peeler
    a device for peeling vegetables or fruits
    pick, plectron, plectrum
    a small thin device (of metal or plastic or ivory) used to pluck a stringed instrument
    PTO, power takeoff
    a device that transfers power from an engine (as in a tractor or other motor vehicle) to another piece of equipment (as to a pump or jackhammer)
    goad, prod
    a pointed instrument that is used to prod into a state of motion
    autocue, prompter
    a device that displays words for people to read
    pull
    a device used for pulling something
    reflector
    device that reflects radiation
    button, release
    a device that when pressed will release part of a mechanism
    remote, remote control
    a device that can be used to control a machine or apparatus from a distance
    reset
    device for resetting instruments or controls
    constraint, restraint
    a device that impede's something's motion
    router
    (computer science) a device that forwards data packets between computer networks
    runner
    device consisting of the parts on which something can slide along
    scratcher
    a device used for scratching
    shoehorn
    a device used for easing the foot into a shoe
    shoetree
    a wooden or metal device that is inserted into a shoe to preserve its shape when it is not being worn
    shooting stick
    device that resembles a spiked walking stick but the top opens into a seat
    shredder
    a device that shreds documents (usually in order to prevent the wrong people from reading them)
    signaling device
    a device used to send signals
    snowshoe
    a device to help you walk on deep snow; a lightweight frame shaped like a racquet is strengthened with cross pieces and contains a network of thongs; one is worn on each foot
    sounder
    a device for making soundings
    source of illumination
    any device serving as a source of visible electromagnetic radiation
    stabiliser, stabilizer
    a device for making something stable
    stemmer
    a device for removing stems from fruit (as from grapes or apples)
    straightener
    a device for straightening
    reinforcement, strengthener
    a device designed to provide additional strength
    stylus
    a needle attached to the cartridge of a record player
    suction cup
    a cup-shaped device (made of rubber, glass, or plastic) that produces a partial vacuum; used to adhere or draw something to a surface
    support
    any device that bears the weight of another thing
    sweatbox
    a device that causes tobacco leaves or fruit or hides to sweat
    synchroflash
    a device used in photography to synchronize the peak of a flash with the opening of the camera shutter
    take-up
    any of various devices for reducing slack (as in a sewing machine) or taking up motion (as in a loom)
    teaser
    a device for teasing wool
    dart thrower, spear thrower, throwing board, throwing stick
    a device resembling a sling that is used in various primitive societies to propel a dart or spear
    tilter
    a device for emptying a cask by tilting it without disturbing the dregs
    pair of tongs, tongs
    any of various devices for taking hold of objects; usually have two hinged legs with handles above and pointed hooks below
    toy
    a device regarded as providing amusement
    trap
    a device in which something (usually an animal) can be caught and penned
    trigger
    a device that activates or releases or causes something to happen
    valve
    device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
    vaporiser, vaporizer
    a device that puts out a substance in the form of a vapor (especially for medicinal inhalation)
    ventilator
    a device (such as a fan) that introduces fresh air or expels foul air
    washboard
    device consisting of a corrugated surface to scrub clothes on
    water cooler
    a device for cooling and dispensing drinking water
    acoustic storage
    a storage device consisting of acoustic delay lines
    action, action mechanism
    the operating part that transmits power to a mechanism
    actuator
    a mechanism that puts something into automatic action
    aileron
    an airfoil that controls lateral motion
    air bag
    a safety restraint in an automobile; the bag inflates on collision and prevents the driver or passenger from being thrown forward
    airbrake, dive brake
    a small parachute or articulated flap to reduce the speed of an aircraft
    air cleaner, air filter
    a filter that removes dust from the air that passes through it
    analyser, analyzer
    an instrument that performs analyses
    andiron, dog, dog-iron, firedog
    metal supports for logs in a fireplace
    ankus
    an elephant goad with a sharp spike and a hook
    annunciator
    an indicator that announces which electrical circuit has been active (as on a telephone switchboard)
    answering machine
    an electronic device that answers the telephone and records messages
    aerial, antenna, transmitting aerial
    an electrical device that sends or receives radio or television signals
    Aqua-Lung, aqualung, scuba
    a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus
    arch support
    a support for the arch of the foot
    arrester, arrester hook
    a restraint that slows airplanes as they land on the flight deck of an aircraft carrier
    assembly
    a group of machine parts that fit together to form a self-contained unit
    attenuator
    an electrical device for attenuating the strength of an electrical signal
    autofocus
    an optical device for focussing a camera or other instrument automatically
    automaton, bot, golem, robot
    a mechanism that can move automatically
    automobile horn, car horn, hooter, horn, motor horn
    a device on an automobile for making a warning noise
    auxiliary storage, external storage, secondary storage
    a data storage device that is not the main memory of a computer
    axis, axis of rotation
    the center around which something rotates
    back, backrest
    a support that you can lean against while sitting
    backboard
    a board used to support the back of someone or something
    backing, mount
    something forming a back that is added for strengthening
    backscratcher
    a long-handled scratcher for scratching your back
    bacteria bed
    layer of sand or gravel used to expose sewage effluent to air and the action of microorganisms
    bagger
    a machine for putting objects or substances into bags
    ballast, light ballast
    an electrical device for starting and regulating fluorescent and discharge lamps
    baluster
    one of a number of closely spaced supports for a railing
    band
    a restraint put around something to hold it together
    bar
    a horizontal rod that serves as a support for gymnasts as they perform exercises
    bar magnet
    a magnet in the form of a bar with magnetic poles at each end
    barrel organ, grind organ, hand organ, hurdy gurdy, hurdy-gurdy, street organ
    a musical instrument that makes music by rotation of a cylinder studded with pegs
    base, pedestal, stand
    a support or foundation
    bass
    the member with the lowest range of a family of musical instruments
    battery, electric battery
    a device that produces electricity; may have several primary or secondary cells arranged in parallel or series
    bearing
    a rotating support placed between moving parts to allow them to move easily
    bearing wall
    any wall supporting a floor or the roof of a building
    bedpost
    any of 4 vertical supports at the corners of a bedstead
    beeper, pager
    an electronic device that generates a series of beeps when the person carrying it is being paged
    bell
    a hollow device made of metal that makes a ringing sound when struck
    bellows
    a mechanical device that blows a strong current of air; used to make a fire burn more fiercely or to sound a musical instrument
    bellpull
    a handle or cord that is pulled to ring a doorbell or a servant's bell etc.
    Bessemer converter
    a refractory-lined furnace used to convert pig iron into steel by the Bessemer process
    bimetallic strip
    a strip consisting of two metals that bends with a rise in temperature
    biprism
    an optical device for obtaining interference fringes
    birdcall
    a device for imitating a birdcall
    bite plate, biteplate
    a removable dental appliance that is worn in the palate for diagnostic or therapeutic purposes
    blade
    the part of the skate that slides on the ice
    bomb
    an explosive device fused to explode under specific conditions
    bookend
    a support placed at the end of a row of books to keep them upright (on a shelf or table)
    brace, bracing
    a structural member used to stiffen a framework
    brace, braces, orthodontic braces
    an appliance that corrects dental irregularities
    brace
    a support that steadies or strengthens something else
    bracket, wall bracket
    a support projecting from a wall (as to hold a shelf)
    brake
    a restraint used to slow or stop a vehicle
    brake
    anything that slows or hinders a process
    brake pad
    one of the pads that apply friction to both sides of the brake disk
    brake shoe, shoe, skid
    a restraint provided when the brake linings are moved hydraulically against the brake drum to retard the wheel's rotation
    brasier, brazier
    large metal container in which coal or charcoal is burned; warms people who must stay outside for long times
    bridge
    a wooden support that holds the strings up
    brush
    conducts current between rotating and stationary parts of a generator or motor
    buffer, buffer storage, buffer store
    (computer science) a part of RAM used for temporary storage of data that is waiting to be sent to a device; used to compensate for differences in the rate of flow of data between components of a computer system
    burglar alarm
    a warning device that is tripped off by the occurrence of a burglary
    bus, busbar
    an electrical conductor that makes a common connection between several circuits
    buzzer
    a signaling device that makes a buzzing sound
    cable, line, transmission line
    a conductor for transmitting electrical or optical signals or electric power
    calculating machine, calculator
    a small machine that is used for mathematical calculations
    calender
    a machine that smooths or glazes paper or cloth by pressing it between plates or passing it through rollers
    calliope, steam organ
    a musical instrument consisting of a series of steam whistles played from a keyboard
    camera lucida
    an optical device consisting of an attachment that enables an observer to view simultaneously the image and a drawing surface for sketching it
    capacitance, capacitor, condenser, electrical condenser
    an electrical device characterized by its capacity to store an electric charge
    carriage
    a machine part that carries something else
    cartridge ejector, ejector
    a mechanism in a firearm that ejects the empty shell case after firing
    cartridge extractor, cartridge remover, extractor
    a mechanism in a firearm that pulls an empty shell case out of the chamber and passes it to the ejector
    ATM, automated teller, automated teller machine, automatic teller, automatic teller machine, cash dispenser, cash machine
    an unattended machine (outside some banks) that dispenses money when a personal coded card is used
    catalytic converter
    a converter that uses a platinum-iridium catalyst to oxidize pollutants and carbon monoxide into carbon dioxide and water; an antipollution device on an automotive exhaust system
    catch, stop
    a restraint that checks the motion of something
    cauterant, cautery
    an instrument or substance used to destroy tissue for medical reasons (eg removal of a wart) by burning it with a hot iron or an electric current or a caustic or by freezing it
    CD drive
    a drive that reads a compact disc and that is connected to an audio system
    CD-ROM drive
    a drive that is connected to a computer and on which a CD-ROM can be `played'
    cell, electric cell
    a device that delivers an electric current as the result of a chemical reaction
    cervical cap
    a contraceptive device consisting of a small thimble-shaped cup that is placed over the uterine cervix to prevent the entrance of spermatozoa
    chain
    anything that acts as a restraint