Wiktionary

ultraviolet

English

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Etymology

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From ultra- +‎ violet.

Adjective

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ultraviolet (comparative more ultraviolet, superlative most ultraviolet)

  1. Of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 to 10 nanometres.
  2. (figurative, physics) Relating to very high energies or very small distances or time spans.
    Antonym: infrared
    • 2004, Barton Zwiebach, A First Course in String Theory, →ISBN, Figure 23.1, page 519:
      A one-loop Feynman graph that represents a virtual process. In the limit in which the virtual process involves short distances or high momenta, one may find an ultraviolet divergence in the corresponding amplitude.
    • 2009, Herbert W. Hamber, Quantum Gravitation: The Feynman Path Integral Approach, →ISBN, page vii:
      Some have advocated the search for a new theory of quantum gravity, a theory which does not suffer from ultraviolet infinity problems.
    • 2017, David F. Chernoff, S.-H. Henry Tye, “Inflation, string theory and cosmic strings”, in Wei-Tou Ni, editor, One Hundred Years of General Relativity […], volume 2, →ISBN, page 275:
      Since current gravitational observations are insensitive to quantum effects, one may wonder why an ultraviolet completion of the gravity theory is needed if inflation, in fact, occurs several orders of magnitude below the Planck scale.

Derived terms

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Translations

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Noun

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ultraviolet (countable and uncountable, plural ultraviolets)

  1. Ultraviolet colour.

Translations

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See also

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Danish

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Adjective

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ultraviolet

  1. ultraviolet

Inflection

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Inflection of ultraviolet
Positive Comparative Superlative
Indefinte common singular ultraviolet — —2
Indefinite neuter singular ultraviolet — —2
Plural ultraviolete — —2
Definite attributive1 ultraviolete — —
1) When an adjective is applied predicatively to something definite, the corresponding "indefinite" form is used.
2) The "indefinite" superlatives may not be used attributively.

References

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French

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Etymology

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From ultra- +‎ violet.

Pronunciation

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  • Audio:(file)

Adjective

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ultraviolet (feminine ultraviolette, masculine plural ultraviolets, feminine plural ultraviolettes)

  1. ultraviolet

Noun

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ultraviolet m (plural ultraviolets)

  1. ultraviolet (light)

Further reading

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Romanian

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Etymology

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Borrowed from French ultraviolet. Equivalent to ultra- +‎ violet.

Adjective

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ultraviolet m or n (feminine singular ultravioletă, masculine plural ultravioleți, feminine and neuter plural ultraviolete)

  1. ultraviolet

Declension

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Declension of ultraviolet
singular plural
masculine neuter feminine masculine neuter feminine
nominative/
accusative 		indefinite ultraviolet ultravioletă ultravioleți ultraviolete
definite ultravioletul ultravioleta ultravioleții ultravioletele
genitive/
dative 		indefinite ultraviolet ultraviolete ultravioleți ultraviolete
definite ultravioletului ultravioletei ultravioleților ultravioletelor
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