light spectrum

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English[edit]

Etymology[edit]

light (visible) +‎ spectrum (range of electromagnetic wavelengths)

Noun[edit]

light spectrum (uncountable)

  1. (physics) The portion of the electromagnetic spectrum that is visible to humans.
  2. (physics) an extension of the human-visible spectrum to include near-visible wavelengths, primarily near infrared.

Synonyms[edit]