Search Result for "cosignatory": 
Wordnet 3.0

NOUN (1)

1. one of two or more signers of the same document (as a treaty or declaration);
[syn: cosigner, cosignatory]


ADJECTIVE (1)

1. signing jointly with others; 



WordNet (r) 3.0 (2006):

cosignatory
    adj 1: signing jointly with others
    n 1: one of two or more signers of the same document (as a
         treaty or declaration) [syn: cosigner, cosignatory]