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Dictionary Results For "Magnitude" [?]/[OPML]
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English

Pronunciation

  • IPA: /mægnɪtjuːd/


Noun

  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).


See also


Translations

fr:magnitude gl:magnitude io:magnitude it:magnitude hu:magnitude ja:magnitude pl:magnitude pt:magnitude ru:magnitude simple:magnitude sv:magnitude ta:magnitude te:magnitude vi:magnitude zh:magnitude

GNU Project's publication of CIDE, 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
amongst themselves, that the intervals of empty
spaces between them may be equal in magnitude to
them all. --Sir I.
Newton.
[1913 Webster]

2. (Geom.) That which has one or more of the three
dimensions, length, breadth, and thickness.
[1913 Webster]

3. Anything of which greater or less can be predicated, as
time, weight, force, and the like.
[1913 Webster]

4. Greatness; grandeur. "With plain, heroic magnitude of
mind." --Milton.
[1913 Webster]

5. Greatness, in reference to influence or effect;
importance; as, an affair of magnitude.
[1913 Webster]

The magnitude of his designs. --Bp. Horsley.
[1913 Webster]

6. (Astron.) See magnitude of a star, below.
[PJC]

Apparent magnitude

1. (Opt.), the angular breadth of an object viewed as
measured by the angle which it subtends at the eye of the
observer; -- called also apparent diameter.

2. (Astron.) Same as magnitude of a star, below.

Magnitude of a star (Astron.), the rank of a star with
respect to brightness. About twenty very bright stars are
said to be of first magnitude, the stars of the sixth
magnitude being just visible to the naked eye; called also
visual magnitude, apparent magnitude, and simply
magnitude. Stars observable only in the telescope are
classified down to below the twelfth magnitude. The
difference in actual brightness between magnitudes is now
specified as a factor of 2.512, i.e. the difference in
brightness is 100 for stars differing by five magnitudes.
[1913 Webster +PJC]
WordNet magnitude
n 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"
Moby Dictionary
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


MAGNITUDE, n. Size. Magnitude being purely relative, nothing is large and nothing small. If everything in the universe were increased in bulk one thousand diameters nothing would be any larger than it was before, but if one thing remain unchanged all the others would be larger than they had been. To an understanding familiar with the relativity of magnitude and distance the spaces and masses of the astronomer would be no more impressive than those of the microscopist. For anything we know to the contrary, the visible universe may be a small part of an atom, with its component ions, floating in the life- fluid (luminiferous ether) of some animal. Possibly the wee creatures peopling the corpuscles of our own blood are overcome with the proper emotion when contemplating the unthinkable distance from one of these to another.
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