sun protection factor
noun Date: 1978 a number assigned to a sunscreen that is the factor by which the time required for unprotected skin to become sunburned is increased when the sunscreen is used — abbreviation SPF

New Collegiate Dictionary. 2001.

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  • Sun Protection Factor — SPF (Sun Protection Factor солнцезащитный фактор) основная характеристика солнцезащитных косметических средств, обозначает коэффициент, показывающий во сколько раз большее время потребуется коже защищённой солнцезащитным средством для получения… …   Википедия

  • sun protection factor — n spf * * * (SPF), sun protective factor the ratio between the number of minimal erythema doses required to induce erythema through a film of sunscreen and that for unprotected skin …   Medical dictionary

  • sun protection factor — n. a number indicating the relative effectiveness of a sunblock in preventing certain ultraviolet rays from burning the skin: a higher number indicates a greater degree of protection * * * …   Universalium

  • sun protection factor — n. a number indicating the relative effectiveness of a sunblock in preventing certain ultraviolet rays from burning the skin: a higher number indicates a greater degree of protection …   English World dictionary

  • sun protection factor — noun the degree to which a sunscreen protects the skin from the direct rays of the sun • Syn: ↑SPF • Hypernyms: ↑degree, ↑grade, ↑level * * * noun : SPF herein * …   Useful english dictionary

  • sun protection factor — sun′ protec tion fac tor n. pha See SPF • Etymology: 1975–80 …   From formal English to slang

  • sun protection factor — SPF. A scale for rating the level of sunburn protection in sunscreen products. The higher the SPF, the more sunburn protection it gives. Sunscreens with an SPF value of 2 through 11 give minimal protection against sunburns. Sunscreens with an SPF …   English dictionary of cancer terms

  • sun protection factor — noun an indication of how long a sunscreen remains effective when applied to the skin Example: If someone normally burns in 10 minutes with no sunscreen, then a sunscreen with factor 20 will provide protection for up to 20x10 = 200 minutes …   Wiktionary

  • sun protection factor — number for measuring the level of protection of the skin against the suns rays, SPF …   English contemporary dictionary

  • sun protection factor. — See SPF. [1975 80] * * * …   Universalium

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