3 days ago · Luminous, like its synonyms radiant, shining, glowing, and lustrous, is generally a positive adjective, especially when it describes something that doesn't literally glow, such as a face, a …

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LUMINOUS definition: radiating or reflecting light; shining; bright. See examples of luminous used in a sentence.

LUMINOUS definition: 1. producing or reflecting bright light, especially in the dark: 2. relating to light as it is…. Learn more.

Something that is luminous shines or glows in the dark. The luminous dial on the clock showed five minutes to seven. ...one of the most luminous and unstable stars in our Galaxy.

Definition of luminous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Luminous means full of or giving off light. During the winter holidays, with all their emphasis on light, you can see luminous displays of candles everywhere.

1. radiating or reflecting light; shining; bright. 2. lighted up or illuminated; well-lighted: the luminous ballroom. 3. brilliant intellectually; enlightened or enlightening. 4. clear; readily intelligible.

The luminous efficiency of any source of light, that is to say, the percentage of rays emitted which affect the eye as light compared with the total radiation, is dependent upon its temperature.

Jan 20, 2026 · Adjective luminous (comparative more luminous, superlative most luminous) Emitting light; glowing brightly; shining. Synonyms: beamful, shining, radiant; see also Thesaurus: shining