Phenomena and Processes

Ultraviolet Rays

That portion of the electromagnetic spectrum immediately below the visible range and extending into the x-ray frequencies. The longer wavelengths (near-UV or biotic or vital rays) are necessary for the endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic or extravital rays) are viricidal, bactericidal, mutagenic, and carcinogenic and are used as disinfectants.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

That portion of the electromagnetic spectrum immediately below the visible range and extending into the x-ray frequencies. The longer wavelengths (near-UV or biotic or vital rays) are necessary for the endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic or extravital rays) are viricidal, bactericidal, mutagenic, and carcinogenic and are used as disinfectants.

MeSH Record

Classification

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MeSH Record

Synonyms

21 entry terms
  • Actinic Rays
  • UV Light
  • Ultra-Violet Rays
  • Ultraviolet Light
  • Actinic Ray
  • Light, UV
  • Light, Ultraviolet
  • Ray, Actinic
  • Ray, Ultra-Violet
  • Ray, Ultraviolet
  • Ultra Violet Rays
  • Ultra-Violet Ray
  • Ultraviolet Ray
  • Black Light, Ultraviolet
  • UV Radiation
  • Ultraviolet Radiation
  • Radiation, UV
  • Radiation, Ultraviolet
  • Ultraviolet Black Light
  • Ultraviolet Black Lights
  • Ultraviolet Radiations

MeSH Record

Aspects Covered

3 allowable subheadings

Indexed with the subheadings adverse effects, classification, history.

MeSH Record

Indexing Annotation

non-ionizing but short-wave UV is ionizing

MeSH Hierarchy

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AMA Style

References

  1. National Library of Medicine. Ultraviolet Rays. Medical Subject Headings (MeSH). 2026. Unique ID D014466. http://id.nlm.nih.gov/mesh/2026/D014466
  2. Ultraviolet Rays. In: Wikipedia. https://en.wikipedia.org/wiki/Ultraviolet
  3. Ultraviolet Rays. In: Wikidata. https://www.wikidata.org/wiki/Q11391