ULTRAVIOLET LIGHT

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does ultraviolet light mean? 

• ULTRAVIOLET LIGHT (noun)
  The noun ULTRAVIOLET LIGHT has 1 sense:

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

  Familiarity information: ULTRAVIOLET LIGHT used as a noun is very rare.

 Dictionary entry details 

• ULTRAVIOLET LIGHT (noun)

Sense 1

Meaning:

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

Classified under:

Nouns denoting natural phenomena

Synonyms:

ultraviolet; ultraviolet illumination; ultraviolet light; ultraviolet radiation; UV

Hypernyms ("ultraviolet light" 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 light"):

sun-ray; sunray (a ray of artificial ultraviolet light from a sunray lamp)

 Context examples 

Increased sensitivity of the skin to ultraviolet light exposure.

(Photosensitivity, NCI Thesaurus)

These changes, known as mutations, can be caused by a number of factors, some environmental, such as exposure to tobacco smoke or to ultraviolet light.

(‘Fingerprint database’ could help scientists to identify new cancer culprits, University of Cambridge)

Researchers found less dimming in the infrared light from the star than in its ultraviolet light.

(Mysterious Dimming of Tabby's Star May Be Caused by Dust, NASA)

Ultraviolet light, however, doesn't travel far enough into tissues to generate therapeutic radicals close to the tumor.

(Making higher energy light to fight cancer, National Science Foundation)

Found naturally in animal tissues, cholecalciferol (vitamin D3) is formed in the skin when ultraviolet light activates cholesterol conversion into vitamin D3.

(D Vitamin, NCI Thesaurus)

And these lasers typically need shorter wavelengths, such as ultraviolet light, to power them.

(Tiny, biocompatible laser could function inside living tissues, National Science Foundation)

Compared to Sun-like stars, M dwarfs emit high levels of ultraviolet light (though less light overall), which is harmful to life and can erode a planet's atmosphere.

(A Rare Look at a Rocky Exoplanet's Surface, NASA)

A pigment that gives color to skin and eyes and helps protect it from damage by ultraviolet light.

(Melanin, NCI Dictionary)

A procedure in which blood is removed from the body and treated with ultraviolet light and drugs that become active when exposed to light.

(Extracorporeal photopheresis, NCI Dictionary)

The test uses ultraviolet light to measure stress hormones in a drop of blood, sweat, urine or saliva.

(Engineers create a simple test that can measure stress, National Science Foundation)