/ˈdʒɔɪnt ˈsɪɡnətʃər/ – Phrase
Definition: chữ ký tập thể.
A more thorough explanation: Joint signature refers to a signature that is made by two or more individuals on a document, contract, or other legal instrument, indicating that they are jointly responsible for the obligations or actions outlined in the document.
Example: The contract required a joint signature from both parties involved in the agreement.