countersignature

from WordNet (r) 3.0 (2006)

countersignature
    n 1: a second confirming signature endorsing a document already
         signed [syn: {countersignature}, {countersign}]

from The Collaborative International Dictionary of English v.0.48

countersignature \countersignature\ n.
   a second confirming signature endorsing a document already
   signed.

   Syn: countersign.
        [WordNet 1.5]

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