- 1(of substances) producing bright light by using some forms of radiation a fluorescent lamp (= one that uses such a substance) fluorescent lighting
- 2(of a color, material, etc.) appearing very bright when light shines on it; that can be seen in the dark fluorescent armbands worn by cyclists compare phosphorescent 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
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noun [uncountable]See fluorescent in the Oxford Advanced Learner's DictionaryCheck pronunciation: fluorescent