# UDP

CEFR C2 · Noun

Source: https://englishreference.com/word/udp
Updated: 2026-07-22

## Definition

Stands for User Datagram Protocol. A way for computers to send information over the internet very quickly without checking if every piece of data arrived perfectly.

For teachers: Abbreviation for User Datagram Protocol. A connectionless transport layer protocol used in IP networking that prioritizes low latency over reliability by sending data packets without establishing a formal handshake or verifying delivery.

## Examples

- Online games often use UDP to reduce lag during fast gameplay.
- The streaming service switched to UDP for its live broadcasts to ensure that the video remained synchronized even if some data packets were lost.
- While TCP ensures data integrity through error-checking and retransmission, UDP is preferred for time-sensitive applications like VoIP and DNS queries where speed is more critical than perfect reconstruction.

## Usage notes

- Often used as a modifier before another noun, such as 'UDP packet' or 'UDP port'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.