magnitude
noun
- logarithmic measure of the brightness of a celestial object, in astronomy
- general quantity
- earthquake measurement
- length of vector or complex number
Wiktionary
Pronunciation: /ˈmæɡnɪtjuːd/ / /ˈmæɡnɪt͡ʃuːd/ / /ˈmæɡnɪtuːd/
noun
Etymology: From Latin magnitūdō (“greatness, size”), magnus + -tūdō.
- The absolute or relative size, extent or importance of something.
“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'.”
- An order of magnitude.
- A number, assigned to something, such that it may be compared to others numerically
- Of a vector, the norm, most commonly, the two-norm.
- A logarithmic scale of brightness defined so that a difference of 5 magnitudes is a factor of 100.
- A logarithmic scale of brightness defined so that a difference of 5 magnitudes is a factor of 100.
“Observations in the infrared domain allow one to penetrate the ~25-30 magnitudes of extinction present at visible wavelengths.”
- A measure of the energy released by an earthquake (e.g. on the Richter scale).