Countersignature

(redirected from countersignatures)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

Countersignature

A second signature by a second person on a document. Countersignatures exist for authentication. For example, the prime minister may be required to countersign a law the president approves in order to guarantee approval. Likewise, a witness may countersign a will to show that it really represents the testator's wishes.