Fluorescent

//ˌflʊəˈɹɛsənt// adj, noun

adj, noun ·Moderate ·College level

Definitions

Noun

1
A fluorescent light.
"The fluorescents hummed day and night."
2
a lighting fixture that uses a fluorescent lamp wordnet

Adjective

1
Of or relating to fluorescence.
2
Exhibiting or produced by fluorescence.
"The fluorescent plants shimmered in the darkness."
3
Emitting visible light as a result of the excitation of phosphors by ultraviolet photons produced by the passage of an electrical current through an inert gas infused with mercury.
"The quality of fluorescent lighting technology has improved dramatically in recent years."
4
Vivid, as if fluorescing; neon.
"Her shirt was fluorescent orange."

Adjective

1
emitting light during exposure to radiation from an external source wordnet
2
brilliantly colored and apparently giving off light wordnet

Synonyms

bright colorful day glo fluorescent fixture fluorescent fixture light

Example

"I must replace that fluorescent lamp."

Etymology

From fluoresce + -ent.

Related phrases

fluorescent lamp fluorescent tag fluorescent tube green fluorescent protein vacuum fluorescent display electrical current inert gas

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.