Longman Dictionary of Contemporary English homepage

Topic: COLOURS

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'

fluorescent

adjective
     
flu‧o‧res‧cent
1CCTP 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]
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