Sun Protection Factor Definition
noun
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.
Webster's New World
An indication of how long a sunscreen remains effective when applied to the skin.
If someone normally burns in 10 minutes with no sunscreen, then a sunscreen with sun protection factor 20 will provide protection for up to 20x10 = 200 minutes.
Wiktionary
Synonyms:
Other Word Forms of Sun Protection Factor
Noun
Singular:
sun protection factor
Plural:
sun protection factorsRelated Articles
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