uv
part of speech
noun / abbreviation (UV, ultraviolet); adjective (UV, as in UV rays)
meaning for a pupil
1) UV stands for ultraviolet, a kind of light from the Sun that our eyes cannot see. tree →
2) UV rays can burn skin and hurt eyes. tree →
3) The UV index is a number that tells how strong the Sun's UV is on a given day. tree →
4) In old dialect spelling, "uv" is a way of writing "of". tree →
sense in the lessons
In science and health lessons, UV light is invisible but gives sunburn and, over many years, can cause skin cancer and eye damage. UV is strongest around midday, in summer, near the equator, high in mountains, and near water or snow; it can be strong even on cloudy days. In Australia and New Zealand, when the UV index is 3 or higher, people use sun protection: sunscreen, hats, sunglasses, shade. UV lamps are also used to kill germs. Phrases: UV rays, UV index, UV protection, UV light.
examples
- UV rays from the Sun can burn your skin. tree →
- The UV index is high today, so wear a hat. tree →
- Sunglasses with UV protection keep your eyes safe. tree →
- You can't see UV light, but it's there. tree →
- UV can burn you even on a cloudy day. tree →
- Sunscreen blocks UV rays. tree →
- The UV is strongest at midday. tree →
- Some insects, like bees, can see UV light. tree →
note
Written in capitals: UV (said «you-vee»). It is an abbreviation, not a real word on its own. UV is not heat: you can get sunburnt on a cool, windy day. SPF on sunscreen shows how much it protects against burning.
In the corpora
- The Sun gives out invisible ultraviolet, or UV, rays that burn the skin.
- You cannot feel UV rays, so you can burn even when it does not feel hot.
- Much of the UV gets through clouds, so you can burn on a cloudy day.
- UV is strongest around the middle of the day.
- Water, sand and snow reflect UV, so you can burn even under an umbrella or on a ski slope.
Trees and pragmatics
Every meaning and example of «uv» parsed by Mova, each sentence with its dependency tree and frames.