sig•na•to•ryPronunciation: (sig'nu-tôr"ē, -tōr"ē), [key]
—adj., n., pl. -ries.
having signed, or joined in signing, a document: the signatory powers to a treaty.
a signer, or one of the signers, of a document: France and Holland were among the signatories of the treaty.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.