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单词 bar magnet
释义

bar1 /bär/

noun
  1. A rod, strip or oblong block of any solid substance
  2. Formerly, any of various standards of weight or value
  3. A pound, sovereign (esp half a bar ten shillings or fifty pence) (obs sl)
  4. A strong rod or long piece used as a lever, door fastening, barrier, part of a gate or grate, etc
  5. A crossbar
  6. A bolt
  7. A barrier
  8. An obstruction or impediment
  9. That which completely puts an end to an action or claim
  10. In salary statements, a level beyond which one cannot rise unless certain conditions, concerning eg the amount of advanced work one does, are met
  11. A bank or shoal as at the mouth of a river or harbour
  12. A counter across which liquor or food is served
  13. (one room in) a public house
  14. A counter at which one particular article of food, clothing, etc, is sold, or one particular service is given
  15. A rail or similar structure marking off a space, as in a house of parliament, or that at which prisoners are arraigned in court
  16. (usu with cap) barristers or advocates collectively, or (loosely) the legal profession
  17. A court
  18. An authority appealed to
  19. A ballet-dancer's exercise rail (usu barre)
  20. An addition to a medal, a strip of metal below the clasp, showing that it has been won twice
  21. A ridge between a horse's teeth
  22. A stripe, esp transverse
  23. A heating element in an electric fire
  24. A horizontal band across a shield (heraldry)
  25. A rhythmic unit in music, consisting of a certain number of beats in either simple or compound time, marked by the time signature
  26. A bar line (music) (see also double bar under double)
  27. (in pl) the game of (prisoners'-)base (but see base1)
transitive verb (barrˈing; barred)
  1. To fasten, secure, shut (out or in), furnish or mark with a bar or bars
  2. To hinder
  3. To obstruct
  4. To exclude the possibility or validity of
  5. To preclude
  6. To divide into bars
preposition

Except, but for

ORIGIN: OFr barre, from LL barra

barˈful (Shakespeare barreˈfull) adjective

Full of obstructions

barrˈing noun

The action of the verb

preposition
  1. Except for
  2. Leaving out of consideration

barˈbell noun

A bar weighted at the ends for weightlifting exercises

bar billiards singular noun

A small-scale version of billiards played in bars

bar chart or bar graph noun

A graph showing comparative quantities by means of rectangular blocks of varying proportional height

barˈcode noun

An arrangement, readable by computer, of thick and thin parallel lines, eg printed on, and giving coded details of, goods at a point of sale, library books, etc

barˈcoded adjective

barcode reader or barcode scanner noun

An optical device which can read barcode data and translate them into digital signals for processing

Bar Council noun

The governing professional body of English barristers

barˈfly noun (old inf)

A drinker who spends his or her time in bars

barfly jumping noun

The sport of jumping onto a Velcro-covered wall and sticking there

bar graph see bar chart above.

barˈ-iron noun

Iron in malleable bars

barˈkeep noun (US)

A person who serves drinks at a bar

barˈkeeper noun

The keeper of a refreshment bar or toll-bar

bar line noun (music)

A vertical line across the staff between each bar

bar lunch or bar meal noun

A light meal or snack available in a bar

bar magnet noun

A permanent magnet in the form of a straight bar

barˈmaid, barˈman or barˈperson noun

A woman, man or person who serves at a bar in a public house, etc

barˈ-parlour noun

A small room adjoining a bar in a public house

barred code noun (telecommunications)

Any dialled code that automatic exchange apparatus is primed to reject by connecting the caller no further than the number unobtainable tone

barring-outˈ noun (obsolete)

The shutting out of a schoolmaster from school by the pupils, to enforce demands

barˈ-room noun (chiefly US)

A room in which there is a bar, taproom (also adjective)

bar-sinˈister see baton-sinister under baton

bar slide noun

A bar-shaped hair ornament

bar stool noun

A high stool suitable for sitting at a bar

bar supper noun

A bar meal available in the evening

bar tack noun

A straight stitch made at right angles to a buttonhole or other weak spot to strengthen it

barˈtender noun

A barman or barmaid

barˈwood noun

A red dyewood imported in bars from Africa

at the bar

  1. In court
  2. In practice as a barrister or advocate

bar none (informal)

With no exceptions

behind bars

In prison

called to the bar

Admitted as barrister or advocate

called within the bar

Made Queen's (or King's) Counsel in the UK

magnet /magˈnit/

noun
  1. The lodestone (natural magnet)
  2. A bar or piece of metal, esp iron, to which the property of attracting other substances containing iron or some other metals has been imparted and which, when suspended, will point approximately north to south
  3. Anyone or anything that attracts (figurative)
ORIGIN: Through OFr or L, from Gr magnētis (lithos) Magnesian (stone), from Magnēsiā, in Lydia or Thessaly

magˈnetar noun

(for ‘magnetic star’; cf pulsar under pulsate) a dense neutron star with a magnetic field 1014 times stronger than that of the earth

magnetic /mag-netˈik/ or magnetˈical adjective

  1. Relating to magnets or to magnetism
  2. Having, or capable of acquiring, the properties of a magnet
  3. Attractive
  4. Strongly affecting others by personality
  5. Hypnotic

magnetˈically adverb

magnetician /-ishˈən/ noun

A magnetist

magnetˈics singular noun

The science of magnetism

magˈnetism noun

  1. The cause of the attractive power of the magnet
  2. The phenomena connected with magnets
  3. The science that deals with the properties of magnets
  4. Attraction
  5. Influence of personality

magˈnetist noun

A scientist specializing in magnetism

magˈnetite noun

Magnetic iron ore (Fe3O4), called lodestone when polar

magnetīzˈable or magnetīsˈable adjective

magnetīzāˈtion or magnetīsāˈtion noun

magˈnetize or magˈnetise transitive verb

  1. To make magnetic
  2. To attract as if by a magnet
  3. To hypnotize (archaic)
  4. To convert (a school) into a magnet school (US)

magˈnetīzer or magˈnetīser noun

magneto /mag-nēˈtō/ noun (pl magnēˈtos)

Short form of magneto-electric machine, a small generator with a permanent magnet, used for ignition in an internal-combustion engine, etc

magˈneton noun

A natural unit of magnetic moment

magˈnetron noun

A two-electrode valve in which the flow of electrons from a large central cathode to a cylindrical anode is controlled by crossed electric and magnetic fields, used to give high-powered microwave radiation

magnon /magˈnon/ noun

A quantum of spin wave energy in magnetic material

magnet (high) school noun

In the USA, a school that, in addition to providing a general education, specializes in teaching a particular subject such as science, languages or performing arts

magnetic battery noun

Several magnets placed with their like poles together, so as to act with great force

magnetic board noun

A white enamelled metal board upon which material for display is mounted by means of magnetic strips

magnetic bottle noun

The containment of a plasma during thermonuclear experiments by applying a specific pattern of magnetic fields

magnetic bubble memory or magnetic bubble store noun (computing)

Same as bubble memory (see under bubble)

magnetic card noun

A piece of plastic or cardboard with a magnetizable surface on which data can be stored

magnetic chuck noun

A chuck having a surface in which alternate steel elements, separated by insulating material, are polarized by electromagnets, allowing light flat work to be held securely

magnetic confinement noun (nuclear eng)

In fusion research, the use of shaped magnetic fields to confine a plasma

magnetic curves plural noun

The curves formed by iron-filings around the poles of a magnet

magnetic dip or magnetic inclination noun

The angle between the horizontal and the line of the earth's magnetic field

magnetic disk or magnetic disc noun (computing)

A flat, circular sheet of material coated with a magnetic oxide, used to store programs and data

magnetic diskette noun (computing)

Same as floppy disk (see under flop1)

magnetic drum noun

A storage device used in early computers, consisting of a rotating cylinder with a magnetic coating

magnetic equator noun

The line round the earth where the magnetic needle remains horizontal

magnetic field noun

The space over which magnetic force is felt

magnetic fluid noun

A hypothetical fluid formerly assumed to explain the phenomena of magnetism

magnetic flux noun

The surface integral of the product of the permeability of the medium and the magnetic field intensity perpendicular to the surface

magnetic flux density noun

The product of the field intensity and the permeability of the medium

magnetic forming noun

Use of magnetic fields to shape metal

magnetic induction noun

  1. Induced magnetization in magnetic material
  2. Magnetic flux density

magnetic ink noun

Ink with magnetic quality, used eg in printing cheques that are to be sorted by machine

magnetic ink character recognition noun

The reading by a computer of numbers printed in magnetic ink (abbrev MICR)

magnetic lens noun

The counterpart of an optical lens, in which a magnet or system of magnets is used to produce a field which acts on a beam of electrons in a similar way to a glass lens on light rays

magnetic levitation noun

Suspension of eg a train above a track by means of a magnetic field

magnetic media noun

A collective term for all forms of magnetic recording media, such as magnetic disks, tape, etc

magnetic meridian noun

The vertical plane through the magnetic needle

magnetic mine noun

A mine sunk to the sea-bottom, detonated by a pivoted magnetic needle when a ship approaches

magnetic mirror noun (nuclear eng)

A device based on the principle, used in mirror machines, that ions moving in a magnetic field towards a region of considerably higher magnetic field strength are reflected

magnetic moment noun

A measure of the magnetic strength of a permanent magnet, a current-carrying coil, a moving charge or individual atom in a magnetic field

magnetic monopole see monopole

magnetic needle noun

The light bar in the mariner's compass which, because it is magnetized, always points to the north

magnetic north noun

The direction indicated by the magnetic needle

magnetic poles plural noun

Two nearly opposite points on the earth's surface, where the dip of the needle is 90º

magnetic resonance imaging noun

A medical imaging technique using the magnetic resonances of protons in the body tissue (abbrev MRI)

magnetic storm noun

A disturbance in the magnetism of the earth

magnetic stripe noun

(also magˈ-stripe) a horizontal stripe on the back of a credit card, etc, which is read electronically to identify the card

magnetic tape noun

Flexible plastic tape, coated on one side with magnetic material, used to register for later reproduction television images, or sound, or computer data

magnetic therapy noun

A therapeutic treatment using the properties of magnetic fields, eg to increase the permeability of cell walls and to accelerate the healing of fractures

magnetic variation noun

The angular difference between true north and magnetic north at a particular location

animal magnetism

  1. Mesmer's name for hypnotism
  2. The power to hypnotize
  3. According to Christian Science, the false belief that mortal mind exists (and has power to transfer thoughts)
  4. Sexual power of attraction due entirely to physical attributes

artificial magnet

A magnet made by rubbing with other magnets

bar magnet

A magnet in the form of a bar

horse-shoe magnet

A magnet bent like a horseshoe

permanent magnet

A magnet that keeps its magnetism after the force which magnetized it has been removed

personal magnetism

The power of a personality to make itself felt and to exercise influence

terrestrial magnetism

The magnetic properties possessed by the earth as a whole
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更新时间：2025/2/10 9:34:19