# SSE

CEFR C1 · Noun

Source: https://englishreference.com/word/sse
Updated: 2026-05-11

## Definition

Stands for Server-Sent Events. A way for a website to send live updates to your browser automatically without you having to refresh the page.

For teachers: Abbreviation for Server-Sent Events. A standard for real-time communication that allows a server to push data to web pages over HTTP, typically used for live feeds or notifications.

## Examples

- The app uses SSE to show live stock prices.
- Developers chose SSE over WebSockets because they only needed a one-way stream of data from the server to the client.
- By implementing SSE, the dashboard provides users with instantaneous updates on server health without the overhead of constant client-side polling or the complexity of full duplex communication.

## Usage notes

- Often used in the singular to refer to the technology or protocol; can be countable when referring to specific event instances.

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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.