black light

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See also: blacklight

English[edit]

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Etymology[edit]

black +‎ light "Black" being darker than "violet", so being beyond the violet end of the spectrum, hence ultraviolet; black also being a metaphor for non-visible, and ultraviolet being an invisible light

Alternative forms[edit]

Noun[edit]

black light (plural black lights)

  1. Light bulb that emits ultraviolet light, usually used to create the illusion that anything white is glowing.
  2. (slang) ultraviolet radiation/light

Synonyms[edit]

Hypernyms[edit]

Translations[edit]