Meaning & use

luminous

adjective·Academic

Last updated

UK/ˈluːmɪnəs/
US/ˈluːmɪnəs/

Meanings

  1. adjectivecomparable

    Giving off or full of light, especially a soft glowing light, so that it can be seen in the dark.

    Grammar: Used before a noun or after be: a luminous dial, the sky was luminous.

    Patterns

    • luminous in the dark

    The watch has luminous hands that glow in the dark.

    A luminous moon rose over the lake.

    Deep-sea fish produce a luminous trail in the water.

  2. adjectivecomparableliterary

    Shining with a bright, clear quality that seems to glow from within, said of skin, colors or eyes.

    Grammar: Often used about colors or faces: luminous eyes.

    Patterns

    • luminous with something

    Her face was luminous with joy.

    The painter was famous for his luminous blues.

    The actress had a luminous presence on stage.

  3. adjectivecomparablefigurativeformal

    Remarkably clear and inspiring, said of writing, speech or ideas.

    Grammar: Figurative; often with prose or talent.

    Patterns

    • luminous prose

    The critic praised her luminous prose.

    He gave a luminous explanation of the theory.

    Her luminous intelligence impressed everyone.

Word forms

comparativemore luminous
superlativemost luminous

Common combinations

luminous glow
A luminous glow spread across the horizon.
luminous paint
The children decorated the wall with luminous paint.
luminous eyes
Her luminous eyes lit up when she smiled.
luminous quality
The photograph has a luminous quality.
luminous skin
The cream promised luminous skin.

Synonyms and how they differ

glowing
Glowing is the everyday term for steady light, while luminous is more elevated and descriptive.
radiant
Radiant stresses light sent outward, often linked with joy, as in a radiant smile.
bright
Bright is the plain word and covers any strong light, with no sense of softness.
brilliant
Brilliant means extremely bright and dazzling, stronger than the gentle shine of luminous.

Opposites

Word family

luminosity noun
the quality of giving off light
luminance noun
a measure of brightness
luminary noun
a famous and influential person
illuminate verb
to light up
luminously adverb
with a glow

Commonly confused: luminous or voluminous?

luminous vs voluminous

Voluminous means large in volume, such as a voluminous coat, and has nothing to do with light.

Practice

The clock had ____ numbers so that you could read them in the dark.

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