flu‧o‧res‧cent /flʊəˈresənt $ flʊ-, flɔː-/ adjective
[Date: 1800-1900; Origin: fluorspar, type of fluorescent mineral (18-21 centuries), from Modern Latin fluor 'mineral used for melting', from Latin fluere 'to flow']

1. fluorescent colours are very bright and easy to see, even in the dark:
a fluorescent pink T-shirt

2. a fluorescent light contains a tube filled with gas, which shines with a bright light when electricity is passed through it
—fluorescence noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲