AcnePain Definitions

Some words have more than one meaning. Only those meanings relating to this site will be used.

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All Definitions A - Z

U

Ultraviolet (UV) Radiation
Ultraviolet radiation or UV radiation is the sun's harmful rays, the "invisible rays" that are part of the energy that comes from the sun. UV radiation is made up of three parts: UVA, UVB, and UVC. More about Ultraviolet Radiation

Urine Test
Pronounced - yoor-in test
A strip of special paper is dipped in the urine after urination. This will show if there are any abnormal problems in the urine.