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Definition of magnitude

magnitude

/ˈmæɡnɪˌtjuːd/
mag · ni · tude

Plural:magnitudes
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magnitude Lexical Profile

magnitude Game Scores & Validity

• noun

1

The great size, extent, or scale of something.

Example

"Rescue teams were initially overwhelmed by the sheer magnitude of the flooding across the valley."


2

Great importance, significance, or consequence.

Example

"A policy shift of this magnitude requires thorough debate and public consultation before being enacted."


3

A numerical measure of the energy released by an earthquake, or of the brightness of a celestial object on a logarithmic scale.

Example

"Seismographs recorded an earthquake of magnitude 6.4 off the coast early this morning."


4

The numerical value or size of a mathematical or physical quantity, such as a vector or real number, considered independently of its direction or sign.

Example

"Whereas speed is a scalar that has only magnitude, velocity is a vector defined by both magnitude and direction."

Synonyms
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Antonyms
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Word Origin & Etymology

Borrowed in Middle English from Latin magnitudo ('greatness, bulk, size'), derived from magnus ('great, large') and the abstract noun suffix -tudo.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Magnitude. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/magnitude
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