English Words Starting With M

• magnetic amplifier

  nounC2
  /mæɡˌnet.ɪk ˈæm.plɪ.faɪ.ər/An electromagnetic device that controls a larger electrical current using a smaller one, typically involving a saturable reactor, used to amplify signals or power without vacuum tubes or transistors.
• magnetic anomaly

  nounLow
  /mæɡˌnet.ɪk əˈnɒm.ə.li/A local deviation in the Earth's magnetic field from the expected or regional pattern.
• magnetic bearing

  nounC2 / Specialized
  /mæɡˌnet.ɪk ˈbeə.rɪŋ/The direction from one point to another measured clockwise from magnetic north, used primarily in navigation and surveying.
• magnetic bottle

  nounC2
  /mæɡˌnet.ɪk ˈbɒt.əl/A magnetic field configuration designed to confine high-temperature plasma, preventing it from touching the walls of its container.
• magnetic bubble

  nounVery Low
  /maɡˌnet.ɪk ˈbʌb.əl/A stable, isolated, magnetized region within a thin magnetic film, used historically in computer memory.
• magnetic card

  nounB2
  /mæɡˌnet.ɪk ˈkɑːd/A plastic card with a strip of magnetisable material (a magnetic stripe) on which digital data can be encoded, typically used for identification and financial transactions.
• magnetic character reader

  nounC1/C2
  /mæɡˌnet.ɪk ˈkær.ək.tə ˌriː.dər/A hardware device that reads characters printed with special magnetic ink, primarily for processing bank checks and other financial documents.
• magnetic chart

  nounC2
  /mæɡˌnet.ɪk ˈtʃɑːt/A navigational chart that displays information about the Earth's magnetic field, specifically showing lines of equal magnetic variation (declination) relative to true north.
• magnetic circuit

  nounLow
  /mæɡˌnet.ɪk ˈsɜː.kɪt/A closed path followed by magnetic flux lines, typically through magnetic materials like iron, forming the working principle of electromagnets, transformers, and electric motors.
• magnetic coefficient

  nounVery Low
  /mæɡˌnet.ɪk ˌkəʊ.ɪˈfɪʃ.ənt/A numerical factor that quantifies the degree to which a material can be magnetized or how it responds to a magnetic field.
• magnetic compass

  nounB2
  /mæɡˌnet.ɪk ˈkʌm.pəs/A navigational instrument containing a magnetized needle that aligns itself with Earth's magnetic field to indicate magnetic north.
• magnetic concentration

  nounLow
  /maɡˈnɛtɪk ˌkɒnsənˈtreɪʃən/The process of using magnets to separate and gather magnetic materials (like iron ore) from non-magnetic ones, or the resulting dense accumulation of such materials.
• magnetic confinement

  nounC2 / Very Low Frequency
  /mæɡˌnet.ɪk kənˈfaɪn.mənt/The use of magnetic fields to trap and control plasma, especially in nuclear fusion experiments.
• magnetic constant

  nounC2
  /mæɡˌnet.ɪk ˈkɒn.stənt/A fundamental physical constant (μ₀) that characterizes the strength of the magnetic force in a vacuum.
• magnetic core

  nounC2
  /mæɡˌnet.ɪk ˈkɔː/A piece of magnetic material, typically ferrite or iron, used to concentrate and guide magnetic flux in electrical devices like transformers, inductors, and early computer memory.
• magnetic course

  nounC1
  /mæɡˌnɛt.ɪk ˈkɔːs/In navigation, the course direction relative to magnetic north, as read from a magnetic compass, before accounting for local magnetic variation.
• magnetic declination

  nounLow
  /mæɡˌnet.ɪk ˌdek.lɪˈneɪ.ʃən/The angle on the horizontal plane between magnetic north (the direction the north end of a compass needle points) and true north.
• magnetic dip

  nounC1+
  /mæɡˌnet.ɪk ˈdɪp/The angle between the Earth's magnetic field lines and the horizontal plane.
• magnetic dipole moment

  nounC2
  /mæɡˌnet.ɪk ˈdaɪ.pəʊl ˌməʊ.mənt/A fundamental vector quantity in electromagnetism that measures the strength and orientation of a magnetic source (like a small current loop, an electron, or a magnet).
• magnetic disk

  nounC1
  /mæɡˌnet.ɪk ˈdɪsk/A flat, circular plate with a magnetic coating used for storing digital data in computers.

Showing 461–480 of 8594 words.