[sig-nuh-tawr-ee, -tohr-ee]


having signed, or joined in signing, a document: the signatory powers to a treaty.

noun, plural sig·na·to·ries.

a signer, or one of the signers, of a document: France and Holland were among the signatories of the treaty.

Nearby words

  1. signaling,
  2. signalize,
  3. signally,
  4. signalman,
  5. signalment,
  6. signature,
  7. signature loan,
  8. signature tune,
  9. signboard,
  10. signed english

Origin of signatory

1640–50, in earlier sense “used in affixing seals”; 1860–65 for def 2; < Latin signātōrius of, belonging to sealing, equivalent to signā(re) to mark, seal (see sign) + -tōrius -tory1

Related formsnon·sig·na·to·ry, adjective, noun, plural non·sig·na·to·ries. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for signatories

British Dictionary definitions for signatories


noun plural -ries

a person who has signed a document such as a treaty or contract or an organization, state, etc, on whose behalf such a document has been signed


having signed a document, treaty, etc

Word Origin for signatory

C17: from Latin signātōrius concerning sealing, from signāre to seal, from signum a mark

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for signatories



1640s, "used in sealing," from Latin signatorius "of sealing," from signatus, past participle of signare "to sign" (see sign (v.)). Noun sense of "one who signs" (a treaty, etc.) first recorded 1866.

Online Etymology Dictionary, © 2010 Douglas Harper