having signed, or joined in signing, a document: the signatory powers to a treaty.
–noun
2.
a signer, or one of the signers, of a document: France and Holland were among the signatories of the treaty.
Origin: 1640–50, in earlier sense “used in affixing seals”; 1860–65 for def. 2; < L signātōrius of, belonging to sealing, equiv. to signā(re) to mark, seal (see sign) + -tōrius-tory1
sig·na·to·ry (sĭg'nə-tôr'ē, -tōr'ē) adj. Bound by signed agreement: the signatory parties to a contract. n.
pl.sig·na·to·ries One that has signed a treaty or other document.
[Latin signātōrius, from signātus, past participle of signāre, to mark, from signum, sign; see sign.]
1647, "used in sealing" (adj.), from L. signatorius "of sealing," from signatus, pp. of signare "to sign" (see sign). Noun sense of "one who signs" first recorded 1866.
Main Entry: sig·na·to·ry Pronunciation: 'sig-n&-"tOr-E Function: noun Inflected Form: plural-ries : a signer with another or others <signatories to a petition>; especially: a government bound with others by a signed convention —signatoryadjective