CEFR B2

luminosity

noun

Meaning

The intrinsic brightness of a celestial object (like a star or galaxy), independent of its distance from the observer.

Examples

Astronomers measure the luminosity of stars to understand their size and temperature.
The Sun's luminosity is immense, but it appears smaller because it is relatively close to Earth.

Synonyms: brightness, radiance, brilliance, effulgence

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luminosity (B2)

noun

Pronunciation: /ˌluːmɪˈnɒsəti/

Definition

The intrinsic brightness of a celestial object (like a star or galaxy), independent of its distance from the observer.

Examples

Astronomers measure the luminosity of stars to understand their size and temperature.
The Sun's luminosity is immense, but it appears smaller because it is relatively close to Earth.
Supernovae can briefly outshine their entire host galaxies due to their incredible luminosity.

How to Use luminosity

luminosity of (prepositional phrase): Specifies what object or phenomenon the luminosity belongs to. — "The luminosity of the quasar was astonishing."
measure luminosity (collocation): To determine the brightness of something. — "We can measure luminosity using photometers."

Synonyms of luminosity

Words with a similar meaning to luminosity:

Antonyms of luminosity

Words with the opposite meaning to luminosity:

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