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Definition of blacklight
blacklight
/ˈblækˌlaɪt/
black · light
Plural:blacklights
•Past Simple:blacklighted
•Past Participle:blacklighted
•Present Participle:blacklighting
blacklight Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
Rare
Syllables
2
blacklight Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A lamp that emits primarily long-wave ultraviolet radiation and very little visible light, causing fluorescent and phosphorescent materials to glow in the dark.
Example
"The forensic team used a portable blacklight to detect trace evidence on the carpet."
2
Invisible ultraviolet or infrared electromagnetic radiation emitted by a specialized lamp.
Example
"Certain minerals exhibit brilliant colors when exposed to blacklight."
Synonyms
View all synonyms for blacklight• verb
1
To illuminate or inspect an object or surface using an ultraviolet lamp.
Example
"The art conservator decided to blacklight the canvas to check for recent overpainting."
• Rhymes for blacklight
Cite this Entry
Wordmom. (2026). Definition of Blacklight. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/blacklight