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API

American

abbreviation

American Petroleum Institute. Also A.P.I.
Computers. application programming (or program) interface: a set of protocols used by programmers to create applications for a specific operating system or to interface between the different modules of an application.

API British

abbreviation

application programming interface

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

HappyHorse “is currently under internal beta test and we are expecting to launch API access for the model in the near future,” said a spokesperson at Token Hub, Alibaba’s newly created AI-focused unit.

From The Wall Street Journal • Apr. 10, 2026

While the API has a meeting every March, this time they will discuss the role of American oil and natural gas in supporting reliable energy supply amid global volatility.

From Barron's • Mar. 19, 2026

“Where we are legally required to provide AI chatbots through the WhatsApp Business API, we are introducing pricing for the companies who choose to use our platform to provide those services,” a Meta spokesperson said.

From The Wall Street Journal • Mar. 5, 2026

According to Anthropic, the three Chinese labs generated more than 16 million exchanges with Claude through unauthorized third-party API resellers.

From MarketWatch • Feb. 28, 2026

This is a glimpse of the API at work in the game.

From "Warcross" by Marie Lu

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023