Definition of ultraviolet
1 : situated beyond the visible spectrum at its violet end —used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays
2 : relating to, producing, or employing ultraviolet radiation
ultraviolet
nounPeople Are Reading
Recent Examples of ultraviolet from the Web
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No matter where your complexion falls on the Fitzpatrick Skin Type scale, ultraviolet radiation (UV) from the sun or tanning beds will damage your skin.
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And although the software cannot yet analyze color outside the visible spectrum---like infrared or ultraviolet wavelengths---Wallin thinks it could easily be tweaked to incorporate them.
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Though Cassini has spied the alien auroras in ultraviolet and infrared light before, this time the phenomenon was captured in the visible spectrum.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ultraviolet'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
1840
First Known Use of ultraviolet
1840
ULTRAVIOLET Defined for English Language Learners
ultraviolet
playDefinition of ultraviolet for English Language Learners
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—used to describe rays of light that cannot be seen and that are slightly shorter than the rays of violet light
ULTRAVIOLET Defined for Kids
ultraviolet
playDefinition of ultraviolet for Students
: relating to, producing, or being energy that is like light but has a slightly shorter wavelength and lies beyond the violet end of the spectrum
Medical Dictionary
Medical Definition of ultraviolet
1: situated beyond the visible spectrum at its violet end—used of radiation having a wavelength shorter than wavelengths of visible light and longer than those of X-rays
2: relating to, producing, or employing ultraviolet radiation
ultraviolet
Medical Definition of ultraviolet
: ultraviolet radiation
Learn More about ultraviolet
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See words that rhyme with ultraviolet Spanish Central: Translation of ultraviolet Nglish: Translation of ultraviolet for Spanish speakers
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