English Online Dictionary. What means **magnitude**? What does **magnitude** mean?

## English

### Etymology

From Latin *magnitūdō* (“greatness, size”), *magnus* + *-tūdō*.

### Pronunciation

- IPA
^{(key)}: /mæɡnɪtjuːd/

### Noun

**magnitude** (*countable and uncountable*, *plural* **magnitudes**)

- (uncountable, countable) The absolute or relative size, extent or importance of something.
- (countable) An order of magnitude.
- (mathematics) A number, assigned to something, such that it may be compared to others numerically
- (mathematics) Of a vector, the norm, most commonly, the two-norm.
- (astronomy) The apparent brightness of a star (on a negative, logarithmic scale); apparent magnitude
- (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

## French

### Noun

**magnitude** f (*plural* **magnitudes**)

- magnitude

## Galician

### Noun

**magnitude** f (*plural* **magnitudes**)

- magnitude

## Portuguese

### Pronunciation

- Rhymes: -udʒi

### Noun

**magnitude** f (*plural* **magnitudes**)

- magnitude (size, extent or importance)
- (mathematics) magnitude (value assigned to a variable)
- (mathematics) magnitude (the norm of a vector)
- (astronomy) magnitude (apparent brightness of a star)
- (seismology) magnitude (energy of an earthquake)