AskDefine | Define magnitude

Dictionary Definition



1 the property of relative size or extent; "they tried to predict the magnitude of the explosion"
2 a number assigned to the ratio of two quantities; two quantities are of the same order of magnitude if one is less than 10 times as large as the other; the number of magnitudes that the quantities differ is specified to within a power of 10 [syn: order of magnitude]
3 relative importance; "a problem of the first magnitude"

User Contributed Dictionary



  • /mægnɪtjuːd/


  1. The absolute or relative size, extent or importance of something.
  2. A number, assigned to something, such that it may be compared to others numerically
  3. Of a vector, the norm, most commonly, the two-norm.
  4. The apparent brightness of a star (on a negative, logarithmic scale); apparent magnitude
  5. A measure of the energy released by an earthquake (e.g. on the Richter scale).


size etc
of a vector
apparent brighness of a star
energy of earthquake

Extensive Definition

Magnitude may refer to: magnitude scale which helps people measure such earthquakes, tsunami and even volcanos In astronomy: In seismology: In linguistics ‖ may be confused with ǁ, which refers to a lateral click.
magnitude in Catalan: Magnitud
magnitude in German: Magnitude
magnitude in Spanish: Magnitud
magnitude in French: Magnitude
magnitude in Italian: Magnitudine
magnitude in Lithuanian: Magnitudė
magnitude in Japanese: マグニテュード (曖昧さ回避)
magnitude in Low German: Magnitude
magnitude in Portuguese: Magnitude
magnitude in Sicilian: Magnitùdini
magnitude in Simple English: Magnitude
magnitude in Slovenian: Magnituda
magnitude in Finnish: Magnitudi

Synonyms, Antonyms and Related Words

Beehive, Cepheid variable, Hertzsprung-Russell diagram, Hyades, Messier catalog, NGC, Pleiades, Seven Sisters, absolute magnitude, amount, ampleness, amplitude, area, bigness, binary star, black hole, body, boundlessness, breadth, bulk, caliber, consequence, coverage, depth, diameter, dimension, dimensions, double star, dwarf star, enormity, enormousness, expanse, expansion, extension, extent, fixed star, force, formidableness, fullness, gauge, giant star, gigantism, girth, globular cluster, grandeur, grandness, gravity star, great scope, greatness, height, hugeness, immensity, import, importance, infinity, intensity, largeness, length, main sequence star, mass, mass-luminosity law, matter, measure, measurement, might, mightiness, moment, momentousness, muchness, neighborhood, neutron star, note, nova, numbers, open cluster, order, pith, plenitude, populations, power, prodigiousness, proportion, proportions, pulsar, quantity, quantum, quasar, quasi-stellar radio source, radio star, radius, range, reach, red giant star, relative magnitude, scale, scope, significance, signification, size, sky atlas, spectrum-luminosity diagram, spread, star, star catalog, star chart, star cloud, star cluster, stellar magnitude, strength, stupendousness, substance, sum, supernova, tour de force, tremendousness, tune, variable star, vastness, vicinity, volume, weight, weightiness, white dwarf star, whole, width
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