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the part of the electromagnetic spectrum with wavelengths shorter than light but longer than X-rays; in the range 0.4 × 10--6 and 1 × 10--8 metres
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


Pertaining to ultraviolet radiation. Abbreviated UV.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


(1) See ultraviolet light.

(2) A cloud-based storage locker for licensed content from the Digital Entertainment Content Ecosystem (see DECE). Under the Digital HD brand, purchases of Blu-ray discs with redeemable coupons and purchases of movies and TV shows (not rental) from participating online retailers entitles users to keep their content in the UltraViolet cloud and stream or download it as required.

Depending on the retailer's agreement, content might be sharable with friends and family, and parental access can be applied. A physical disc may also be obtainable. See Digital HD, Blu-ray Combo Pack and media locker.
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References in periodicals archive ?
Introduced by UV Ray in 2003, the Maxwell system's technology is based on UV Ray's 15-plus years of experience in curing ultraviolet inks and coatings.
"Those who are invariably exposed to UV rays for a long time are more likely to have painful temporary eye injuries called photokeratitis and photoconjunctivitis," says Dr Sanjay Dhawan, director, ophthalmology, Fortis Healthcare.
But melanin can't block all the UV rays. That's why we should put on sunscreen lotion.
These will prevent UV rays from filtering in from around the edges.
"The primary function of the cover is to protect the vehicle's finish from Mother Nature's harshest elements, including UV rays, acid rain, moisture and various hard debris," explained Mr.
This hydrophilic effect, once the tiles' surface treatment is activated by UV rays, reduces the tension between the water and the tile coating, creating a continuous wetting of the film that dissolves and washes away dirt particles.
For example, UV rays are stronger in summer than in winter, and when the sun is overhead around the middle of the day.
The film will block up to 99.5 percent of UV rays and provides up to 50 percent more protection from fading than untreated windows, according to company officials.
The blind material distributes light evenly, prevents glare and filters out UV rays. It is nonflammable (fire-resistance categories MI and BI) and easy to maintain.
Although experts recommend covering up in sleeves and pants to block UV rays, just how protective is clothing?
A special coating, chemically bonded into Pilkington Activ self-cleaning glass, allows the sun's UV rays to gradually and continually break down and dissolve organic dirt through a photocatalytic effect.