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[sig-nuh-tawr-ee, -tohr-ee] /ˈsɪg nəˌtɔr i, -ˌtoʊr i/
having signed, or joined in signing, a document:
the signatory powers to a treaty.
noun, plural signatories.
a signer, or one of the signers, of a document:
France and Holland were among the signatories of the treaty.
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 forms
nonsignatory, adjective, noun, plural nonsignatories. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for signatories
  • Another interesting aspect is the list of signatories, below.
  • Scores of the authors and signatories of the letter knew something that the campus did not know.
  • They lower tariff barriers between their signatories, but not everyone else.
  • The signatories are betting that this way they will prevent heavy-handed regulation from stifling their field.
  • signatories seek to formalize such successful processes.
  • Such marketing agreements are binding upon the signatories to the agreements exclusively.
  • signatories on these types of accounts may change frequently.
British Dictionary definitions for signatories


/ˈsɪɡnətərɪ; -trɪ/
noun (pl) -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
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
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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
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