# JSON

CEFR C1 · Noun

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

## Definition

Stands for JavaScript Object Notation. A simple way to organize and store data using text so that different computer programs can easily share information.

For teachers: Abbreviation for JavaScript Object Notation. A lightweight, language-independent data-interchange format that uses human-readable text to store and transmit data objects consisting of attribute-value pairs and arrays.

## Examples

- The app uses JSON to send data to the server.
- Web developers prefer using JSON over XML because it is easier for both humans to read and machines to parse.
- The API returns a JSON object containing nested arrays, which allows the front-end application to dynamically render the user's profile information and recent activity history.

## Usage notes

- Often used as a modifier before another noun, such as 'JSON file' or 'JSON format'.

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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.