spf

from WordNet (r) 3.0 (2006)

SPF
    n 1: the degree to which a sunscreen protects the skin from the
         direct rays of the sun [syn: {sun protection factor},
         {SPF}]

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

SPF
       Sender Permitted From [old term] (SPAM)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

SPF
       Structured Programming Facility

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

SPF
       Sender Policy Framework (SPAM)