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API

UK //eɪ.piː.aɪ//US //ˈeɪ.piː.aɪ//

Definition

A set of rules and protocols for building and interacting with software applications.

In simple words: A way for different software programs to talk to each other.

Examples

The app uses an API to connect to the database.
Using a weather API, developers can display current conditions.
API calls allow different applications to share data seamlessly.
After integrating the API, the website improved its functionality.
Understanding how to use an API is crucial for modern software development.
Many companies offer public APIs for developers to use.
APIs can enhance user experience by connecting multiple services.
The API documentation was very helpful during the integration process.

Usage notes

Commonly used in tech and programming contexts. Avoid in casual conversations unless discussing tech. Usually not formal.

Grammar pattern

noun + is + API

Memory hint

Think of 'API' as 'A Program Interaction'.

Collocations

API documentation
API endpoint
REST API
API key
public API

Synonyms

interface
protocol
framework
service
tool

Common mistakes

Confused with 'IPA', which stands for International Phonetic Alphabet.
Misunderstanding that APIs are a type of software rather than a way to connect software.
Using 'API' in a plural form incorrectly, e.g., 'APIs' is appropriate when discussing multiple.