Document/ˈdɑːkjumənt/ Definition 1 of 3Pro Tip 1/3Proof Element A document often serves as tangible evidence for agreements, ownership, or identity. His birth certificate is a crucial document for the application. Pro Tip 2/3Citation Relevance In academic and research contexts, 'document' refers to sources cited in papers. Please document all your sources at the end of your essay. Pro Tip 3/3Professional Tone The term 'document' is formal, often used in business and legal situations. The company requires all employees to review the document carefully.