| / English Dictionary |
ULTRAVIOLET
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
Synonyms:
ultraviolet; ultraviolet illumination; ultraviolet light; ultraviolet radiation; UV
Classified under:
Nouns denoting natural phenomena
Hypernyms ("ultraviolet" is a kind of...):
actinic radiation; actinic ray (electromagnetic radiation that can produce photochemical reactions)
Hyponyms (each of the following is a kind of "ultraviolet"):
sun-ray; sunray (a ray of artificial ultraviolet light from a sunray lamp)
Derivation:
ultraviolet (having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end)
II. (adjective)
Sense 1
Meaning:
Having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end
Example:
an ultraviolet lamp
Classified under:
Similar:
invisible; unseeable (impossible or nearly impossible to see; imperceptible by the eye)
Derivation:
ultraviolet (radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays)
Context examples:
Upon activation by ultraviolet A light, this agent is able to form interstrand DNA and RNA crosslinks and prevents replication.
(Amotosalen, NCI Thesaurus)
It is also involved in both repair of ultraviolet light-induced DNA damage and the S-phase DNA damage response.
(CUL4A wt Allele, NCI Thesaurus)
Increased sensitivity of the skin to ultraviolet light exposure.
(Photosensitivity, NCI Thesaurus)
Ultraviolet irradiation of ergosterol (plant vitamin D) forms ergocalciferol (vitamin D2).
(D Vitamin, NCI Thesaurus)
Ultraviolet light-induced DNA damage causes a transient immobilization of ERCC1/XPF to engage the complex in a single repair event.
(DNA Excision Repair Protein ERCC-1, NCI Thesaurus)
Concept refers to a number of techniques and procedures including extracorporeal photopheresis, ultraviolet blood irradiation and extracorporeal detoxification methods with drug administration, etc.
(Extracorporeal Circulation Route of Administration, NCI Thesaurus)
This process kills microorganisms through the high ultraviolet content of the light and the brief heating effects.
(High Intensity Light or Pulse Light Sterilization, NCI Thesaurus)
In vivo, ergocalciferol is formed after sun (ultraviolet) irradiation of plant-derived ergosterol, another form of vitamin D. Ergocalciferol is the form of vitamin D usually found in vitamin supplements.
(Ergocalciferol, NCI Thesaurus)
Light therapy can use lasers, LED, fluorescent lamps, and ultraviolet or infrared radiation.
(Light therapy, NCI Dictionary)
Dermatitis caused or precipitated by exposure to ultraviolet sunlight, or by mediating phototoxic or photoallergic material in response to ultraviolet sunlight.
(Photosensitive Dermatitis, NCI Thesaurus)
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