Meanings
nounlight spectrum (plural light spectrums or light spectra)
plural light spectrums · plural light spectra
- natural sciencesThe portion of the electromagnetic spectrum that is visible to humans.
Synonyms: visible light
- natural sciencesan extension of the human-visible spectrum to include near-visible wavelengths, primarily near infrared.
Synonyms & antonyms
nounThe portion of the electromagnetic spectrum that is visible to humans.
Similar
Origin
From light (“visible”) + spectrum (“range of electromagnetic wavelengths”).
Full word history & related roots →Cite this entry
APA
light spectrum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/light%20spectrum
MLA
“light spectrum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/light%20spectrum. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “light spectrum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/light%20spectrum.
Source: light spectrum on Wiktionary, CC BY-SA 4.0.