sun protection factor n.
The ratio of the minimal ultraviolet dose required to produce erythema with and without a sunscreen; a measure of the degree to which a sunscreen protects the skin from ultraviolet radiation, the higher the number the greater degree of protection.
sun protection factor
A measure, expressed numerically, of the degree to which a preparation containing sunscreen protects the skin from ultraviolet rays. The higher the value, the greater the level of protection from sun damage to the skin.
noun 1. a ray of sunlight; sunbeam.
- Sunray pleats
/ˈsʌnˌreɪ/ plural noun 1. (Brit) bias-cut knife pleats that are narrower at the top than at the bottom, producing a flared effect, used esp for skirts US term sunburst pleats
noun 1. the rise or ascent of the sun above the horizon in the morning. 2. the atmospheric and scenic phenomena accompanying this. 3. the time when half the sun has risen above the horizon. 4. the open or beginning stage of any period. adjective 5. (of an industry, technology, etc.) new and growing; developing; […]
- Sunrise industry
noun 1. any of the high-technology industries, such as electronics, that hold promise of future development