sun protection factor

English

Noun

sun protection factor (plural sun protection factors)

  2. An indication of how long a sunscreen remains effective when applied to the skin.
    Alternative form: SPF (initialism)
    If someone normally burns in 10 minutes with no sunscreen, then a sunscreen with sun protection factor 20 will provide protection for up to 20 × 10 = 200 minutes.

Translations

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