luminosity

noun
UK: /ˌluːmɪˈnɒsɪti/
US: /ˌluːməˈnɑːsəti/

  1. The quality of being bright; the state of giving off light.

    1. The luminosity of the sun is very high.
    2. The scientist measured the luminosity of distant stars to determine their age and size.

  2. The brightness of a star or other celestial object.

    1. The galaxy has a high luminosity.
    2. Astronomers observed the supernova's luminosity curve to understand its explosive process.

  3. A measure of brightness, typically expressed in relation to a standard.

    1. The luminosity was measured in candelas.
    2. The screen's luminosity can be adjusted to improve visibility in different lighting conditions.

Synonyms

radiance light illumination intensity brightness

Frequently Asked Questions

The word "luminosity" in English means: The quality of being bright; the state of giving off light., The brightness of a star or other celestial object., A measure of brightness, typically expressed in relation to a standard..

The phonetic transcription of "luminosity" is /ˌluːmɪˈnɒsɪti/ in British English and /ˌluːməˈnɑːsəti/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "luminosity": radiance, light, illumination, intensity, brightness.

Example usage of "luminosity": "The luminosity of the sun is very high.". More examples on the page.