flu ‧ o ‧ res ‧ cent /flʊəˈres ə nt $ flʊ-, flɔː-/ BrE AmE 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]