递送 (dì sòng) is a formal, transitive verb meaning 'to deliver' — especially documents, official letters, packages, or items requiring care and responsibility. It combines 递 (dì), which means 'to pass on' or 'to hand over', and 送 (sòng), meaning 'to send' or 'to deliver'. Together, they emphasize the intentional, often procedural act of transferring something from one party to another, typically in professional, administrative, or service-oriented contexts.

Unlike the more general 送 (sòng), 递送 carries a tone of formality and reliability — it’s commonly used for courier services, legal notices, academic transcripts, or diplomatic correspondence. It rarely appears in casual speech about giving gifts or taking food to friends; for those, 送 is sufficient. The word frequently appears in written Chinese, company slogans, and logistics-related vocabulary, and is almost always followed by a direct object (e.g., 文件, 快递, 通知).