magnitude

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English

Etymology

From Latin magnitūdō (“greatness, size”), magnus +‎ -tūdō.

Pronunciation

Noun

magnitude (countable and uncountable, plural magnitudes)

  1. (uncountable, countable) The absolute or relative size, extent or importance of something.
    • 2020 September 23, Paul Stephen, “East Coast upgrade: changes to schedule... but on schedule”, in Rail, page 31:
      And on a programme of works of this magnitude, passengers will need to be mindful of the age-old maxim of 'no gain without pain'.
  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.
      • 2005, Andreas Eckart et al., The Black Hole at the Center of the Milky Way‎, →ISBN, page 71:
        Observations in the infrared domain allow one to penetrate the ~25-30 magnitudes of extinction present at visible wavelengths.
  6. (seismology) A measure of the energy released by an earthquake (e.g. on the Richter scale).

Derived terms

Translations

Anagrams

French

Pronunciation

Noun

magnitude f (plural magnitudes)

  1. magnitude

Derived terms

Further reading

Galician

Noun

magnitude f (plural magnitudes)

  1. magnitude

Portuguese

Etymology

Learned borrowing from Latin magnitūdō (“greatness, size”). By surface analysis, magno +‎ -itude.

Pronunciation

 
  • (Brazil) IPA(key): /ma.ɡi.niˈtu.d͡ʒi/, /maɡ.niˈtu.d͡ʒi/
    • (Southern Brazil) IPA(key): /maɡ.niˈtu.de/, /ma.ɡi.niˈtu.de/

  • Rhymes: (Brazil) -ud͡ʒi, (Portugal) -udɨ
  • Hyphenation: mag‧ni‧tu‧de

Noun

magnitude f (plural magnitudes)

  1. magnitude (size, extent or importance)
  2. (mathematics) magnitude (value assigned to a variable)
  3. (mathematics) magnitude (the norm of a vector)
  4. (astronomy) magnitude (apparent brightness of a star)
  5. (seismology) magnitude (energy of an earthquake)
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