magnitude

magnitude
magnitude [mag′nə to͞od΄, mag′nətyo͞od΄]
n.
[L magnitudo < magnus, great: see MAGNI-]
1. greatness; specif.,
a) of size
b) of extent
c) of importance or influence
d) Obs. of character
2.
a) size or measurable quantity [the magnitude of a velocity]
b) loudness (of sound)
c) importance or influence
3. Astron. a number representing the apparent brightness of a celestial body: it is part of an unlimited arbitrary scale that ranges from the brightest object, the sun, at -26.72 to the faintest visible object at c. 26: only 22 stars are brighter than 1.5 (first magnitude), while stars c. 6 (sixth magnitude) are barely visible to the naked eye: each increase of one magnitude equals 2.512 times as much brightness (a magnitude increase of 5 is 100 times brighter): see ABSOLUTE MAGNITUDE
4. Geol. a measure of the amount of energy released by an earthquake: see RICHTER SCALE
5. Math. a number given to a quantity for purposes of comparison with other quantities of the same class
——————
of the first magnitude
of the greatest importance

English World dictionary. . 2014.

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  • magnitude — [ maɲityd ] n. f. • 1892; « grandeur, puissance » 1372; lat. magnitudo 1 ♦ Astron. Magnitude apparente : nombre caractéristique du flux de rayonnement reçu d un astre. 2 ♦ Géophys. Magnitude d un séisme : son énergie totale, mesurée selon une… …   Encyclopédie Universelle

  • Magnitude — may refer to: In mathematics: Magnitude (mathematics), the relative size of a mathematical object Magnitude (vector), a term for the size or length of a vector Scalar (mathematics), a quantity defined only by its magnitude Euclidean vector, a… …   Wikipedia

  • Magnitude — Mag ni*tude, n. [L. magnitudo, from magnus great. See {Master}, and cf. {Maxim}.] 1. Extent of dimensions; size; applied to things that have length, breadth, and thickness. [1913 Webster] Conceive those particles of bodies to be so disposed… …   The Collaborative International Dictionary of English

  • magnitude — Mag ni*tude, n. [L. magnitudo, from magnus great. See {Master}, and cf. {Maxim}.] 1. Extent of dimensions; size; applied to things that have length, breadth, and thickness. [1913 Webster] Conceive those particles of bodies to be so disposed… …   The Collaborative International Dictionary of English

  • Magnitude 10,5 — Données clés Titre original 10.5 Réalisation John Lafia Scénario Christopher Canaan, Ronnie Christensen, John Lafia Pays d’origine États Unis Genre Catastrophe …   Wikipédia en Français

  • magnitude — [n1] importance consequence, degree, eminence, grandeur, greatness, import, mark, moment, momentousness, note, pith, significance, signification, weight, weightiness; concept 668 Ant. insignificance, unimportance magnitude [n2] size admeasurement …   New thesaurus

  • magnitude — I noun amplitude, amplitudo, bearing, concern, consequence, consideration, degree, dimension, effect, eminence, enormity, essentiality, extension, extent, gauge, gravity, immensity, import, importance, magnitudo, mark, materiality, materialness,… …   Law dictionary

  • magnitude — (n.) c.1400, greatness of size or character, from L. magnitudo greatness, bulk, size, from magnus great (see MAGNATE (Cf. magnate)) + tudo, suffix forming abstract nouns from adjectives and participles (see TUDE (Cf. tude)). Meaning size, extent… …   Etymology dictionary

  • magnitude — s. f. 1. Qualidade do que é magno. 2. Importância; grandeza …   Dicionário da Língua Portuguesa

  • magnitude — volume, *size, extent, dimensions, area Analogous words: amplitude, *expanse, stretch, spread: *bulk, mass, volume …   New Dictionary of Synonyms

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