What does ultraviolet mean?

Definitions for ultravioletˌʌl trəˈvaɪ ə lɪt

Here are all the possible meanings and translations of the word ultraviolet.

Princeton's WordNet

  1. ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV(adj)

    radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays

  2. ultraviolet(adj)

    having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end

    "ultraviolet radiation"; "an ultraviolet lamp"


  1. ultraviolet(Noun)

    Ultraviolet colour.

  2. ultraviolet(Adjective)

    of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 nanometre - 10 nanometre

Webster Dictionary

  1. Ultraviolet(adj)

    lying outside the visible spectrum at its violet end; -- said of rays more refrangible than the extreme violet rays of the spectrum


  1. Ultraviolet

    Ultraviolet light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays, that is, in the range between 400 nm and 10 nm, corresponding to photon energies from 3 eV to 124 eV. It is so-named because the spectrum consists of electromagnetic waves with frequencies higher than those that humans identify as the color violet. These frequencies are invisible to humans, but visible to a number of insects and birds. UV light is found in sunlight and is emitted by electric arcs and specialized lights such as mercury lamps and black lights. It can cause chemical reactions, and causes many substances to glow or fluoresce. A large fraction of UV, including all that reaches the surface of the Earth, is classified as non-ionizing radiation. The higher energies of the ultraviolet spectrum from wavelengths about 10 nm to 120 nm are ionizing, but due to this effect, these wavelengths are absorbed by nitrogen and even more strongly by dioxygen, and thus have an extremely short path length through air. However, the entire spectrum of ultraviolet radiation has some of the biological features of ionizing radiation, in doing far more damage to many molecules in biological systems than is accounted for by simple heating effects. These properties derive from the ultraviolet photon's power to alter chemical bonds in molecules, even without having enough energy to ionize atoms.


  1. Chaldean Numerology

    The numerical value of ultraviolet in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of ultraviolet in Pythagorean Numerology is: 2

Sample Sentences & Example Usage

  1. David Swayne:

    As we get into spring and summer, sunshine comes and ultraviolet light will kill influenza virus.

  2. John Overstreet:

    There is no science that supports moderate exposure to ultraviolet light, inside or outside, as a dangerous risk.

  3. Caroline Kurtz:

    JTACs — they’re only going to use it for writing, so red lights are going to be best for them because they don’t want it to interfere with their night vision, but let’ssay the PJs,on the other hand — maybe they want one that has ultraviolet light so that blood is now visible, or maybe they want one with infrared so that they could signal to each other. So there are all these different options on the light spectrum that we can play on depending on the mission.

Images & Illustrations of ultraviolet

  1. ultravioletultravioletultraviolet

Translations for ultraviolet

From our Multilingual Translation Dictionary

Get even more translations for ultraviolet »


Find a translation for the ultraviolet definition in other languages:

Select another language:

Discuss these ultraviolet definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"ultraviolet." Definitions.net. STANDS4 LLC, 2018. Web. 23 Mar. 2018. <https://www.definitions.net/definition/ultraviolet>.

Are we missing a good definition for ultraviolet? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for ultraviolet:

Thanks for your vote! We truly appreciate your support.