Definition of magnitude

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