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 таких же фотоповреждений (солнечного ожога), как незащищённой коже.
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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 (SPF) — A number on a scale for rating sunscreens. SPF stands for Sun Protection Factor. SPF numbers on a package can range from as low as 2 to as high as 60. These numbers refer to the product’s ability to screen or block out the sun’s burning rays. The … Medical 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 — 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
sun protection factor — number for measuring the level of protection of the skin against the suns rays, SPF … English contemporary dictionary
