violet ray

noun

1
: an ultraviolet ray
not used technically
2
: a high-frequency electric discharge from the outer surface of a one-electrode vacuum tube having violet-colored fluorescence and often used in therapeutic treatments

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Cite this Entry

“Violet ray.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/violet%20ray. Accessed 21 Dec. 2024.

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