cosignatory編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看cosignatorycosignatory — 名詞名詞1. a person or country that signs a document jointly with others1.名詞釋義共同簽署人a person or country that signs a document jointly with others例句She was a cosignatory to the treaty.