authorizer

from WordNet (r) 3.0 (2006)

authorizer
    n 1: an authority who authorizes (people or actions); "the
         agents report back to their authorizers" [syn:
         {authorizer}, {authoriser}]

from The Collaborative International Dictionary of English v.0.48

Authorizer \Au"thor*i`zer\, n.
   One who authorizes.
   [1913 Webster]

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