- 1shining in the dark; giving out light luminous paint luminous hands on a clock staring with huge luminous eyes (figurative) the luminous quality of the music
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- 2very bright in color They painted the door a luminous green. Thesaurusbright
- brilliant
- vivid
- vibrant
- bright full of light; shining strongly; (of colors) strong and easy to see:a bright yellow dress
- brilliant very bright:The sky was a brilliant blue.
- vivid (approving) (of colors) bright and strong:His eyes were a vivid green.
- vibrant (approving) (of colors) bright and strong:The room was decorated in vibrant blues and greens.
- bright/brilliant/vivid/vibrant colors
- bright/brilliant light/sunlight/sunshine/eyes
adverb Her eyes were large and luminously black.
NAmE//ˌluməˈnɑsət̮i//
noun [singular, uncountable] The moon was shining enough to give a ghostly luminosity to the buildings that crowded both sides of the narrow street.See luminous in the Oxford Advanced Learner's DictionaryCheck pronunciation: luminous