magnitude

Definition from Wiktionary, the free dictionary
Jump to navigation Jump to search

English[edit]

Etymology[edit]

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

Pronunciation[edit]

Noun[edit]

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[1], →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[edit]

Translations[edit]

Anagrams[edit]


French[edit]

Noun[edit]

magnitude f (plural magnitudes)

  1. magnitude

Galician[edit]

Noun[edit]

magnitude f (plural magnitudes)

  1. magnitude

Portuguese[edit]

Pronunciation[edit]

Noun[edit]

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)