visible spectrum
noun
: the part of the electromagnetic spectrum to which the human eye is sensitive extending from a wavelength of about 400 nm for violet light to about 700 nm for red light
Cite this Entry
“Visible spectrum.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/visible%20spectrum. Accessed 4 Nov. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share