co‧sig‧na‧to‧ry /ˌkəʊˈsɪɡnət
əri $ ˌkoʊˈsɪɡnətɔːri/
noun (
plural cosignatories)
[countable] one of a group of people who sign a legal document for their department, organization, country etc:
Both cosignatories must sign the cheque. [TahlilGaran] Dictionary of Contemporary English ▲