• IPA: /ˈmæɡnɪtjuːd/


  1. (uncountable, countable) The absolute or relative size, extent or importance of something.
  2. (countable) An order of magnitude.
  3. (mathematics) A number, assigned to something, such that it may be compared to others numerically
  4. (mathematics) Of a vector, the norm, most commonly, the two-norm.
  5. (astronomy) A logarithmic scale of brightness defined so that a difference of 5 magnitudes is a factor of 100.
    1. (uncountable) The apparent brightness of a star, with lower magnitudes being brighter; apparent magnitude
    2. (countable) A ratio of intensity expressed as a logarithm.
  6. (seismology) A measure of the energy released by an earthquake (e.g. on the Richter scale).
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