different between magnitude vs momentum

English

Etymology

From Latin magnit?d? (“greatness, size”), magnus +? -t?d?.

Pronunciation

• IPA^(key): /?mæ?n?tju?d/

Noun

magnitude (countable and uncountable, plural magnitudes)

1. (uncountable, countable) The absolute or relative size, extent or importance of something.
2. (countable) An order of magnitude.
3. (mathematics) A number, assigned to something, such that it may be compared to others numerically
4. (mathematics) Of a vector, the norm, most commonly, the two-norm.
5. (astronomy) A logarithmic scale of brightness defined so that a difference of 5 magnitudes is a factor of 100.
   1. (uncountable) The apparent brightness of a star, with lower magnitudes being brighter; apparent magnitude
   2. (countable) A ratio of intensity expressed as a logarithm.
6. (seismology) A measure of the energy released by an earthquake (e.g. on the Richter scale).

Derived terms

• order of magnitude
• absolute magnitude
• apparent magnitude

Translations

Anagrams

• gamnitude

French

Pronunciation

• IPA^(key): /ma.?i.tyd/

Noun

magnitude f (plural magnitudes)

1. magnitude

Derived terms

• magnitude absolue

Galician

Noun

magnitude f (plural magnitudes)

1. magnitude

Portuguese

Pronunciation

• Rhymes: -ud?i

Noun

magnitude f (plural magnitudes)

1. magnitude (size, extent or importance)
2. (mathematics) magnitude (value assigned to a variable)
3. (mathematics) magnitude (the norm of a vector)
4. (astronomy) magnitude (apparent brightness of a star)
5. (seismology) magnitude (energy of an earthquake)

English

Etymology

From Latin m?mentum. Doublet of moment and movement

Pronunciation

• (UK) IPA^(key): /?m?(?)?m?nt?m/
• (US) IPA^(key): /?mo??m?nt?m/

Noun

momentum (countable and uncountable, plural momentums or momenta)

1. (physics) Of a body in motion: the tendency of a body to maintain its inertial motion; the product of its mass and velocity.
2. The impetus, either of a body in motion, or of an idea or course of events; a moment.
   • 1843, Nathaniel Hawthorne, "The Old Apple Dealer", in Mosses from an Old Manse

     The travellers swarm forth from the cars. All are full of the momentum which they have caught from their mode of conveyance.

Derived terms

Translations

See also

• wind at one's back

Latin

Etymology

From *movimentum (compare later Medieval Latin movimentum), from Proto-Italic *mowementom. Equivalent to move? (“move, set in motion; excite”) + -mentum (“suffix used to forming nouns from verbs”).

Pronunciation

• (Classical) IPA^(key): /mo??men.tum/, [mo??m?n?t????]
• (Ecclesiastical) IPA^(key): /mo?men.tum/, [m??m?n?t?um]

Noun

m?mentum n (genitive m?ment?); second declension

1. movement, motion, impulse; course
2. change, revolution, movement, disturbance
3. particle, part, point
4. (of time) brief space, moment, short time
5. cause, circumstance; weight, influence, moment
6. importance
7. (New Latin, physics) momentum

Declension

Second-declension noun (neuter).

Derived terms

Descendants

References

• momentum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• momentum in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• momentum in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• momentum in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
• Carl Meissner; Henry William Auden (1894) Latin Phrase-Book?^[2], London: Macmillan and Co.