Meaning of “fluorescent” - Learner’s Dictionary

fluorescent

adjective uk us /flɔːˈresənt/
LIGHT

Fluorescent lights are very bright, tube-shaped, electric lights, often used in offices.

COLOUR

Fluorescent colours, clothes, etc are very bright and can be seen in the dark:

fluorescent pink
a fluorescent jacket

(Definition of “fluorescent” from the Cambridge Learner’s Dictionary © Cambridge University Press)