Engineering English
Promise
Software Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: A Promise is an object representing the eventual completion or failure of an asynchronous operation. It allows you to attach callbacks instead of passing them as arguments, enabling cleaner asynchronous code.
Example in context
“When the data fetch completes, the Promise resolves and we update the user interface with the results using the .then() method.”
“Veri çekme tamamlandığında, Promise çözümlenir ve .then() yöntemini kullanarak kullanıcı arayüzünü sonuçlarla güncelleriz.”
Where engineers use it
Promises are fundamental in JavaScript for handling asynchronous tasks like API calls and file reads. Engineers use them with async/await syntax to write non-blocking code. They appear in callback replacements and error handling patterns.
Practice: can you use “Promise” at work?
A developer is fetching data from two endpoints sequentially. Show how to use Promises to avoid callback hell and manage errors properly.
Show a model answer
“Chain the Promises to ensure the second API call waits for the first one to complete.”
“Promise” in 21 languages
| English | Promise |
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| Turkish | Promise |
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| Bengali | Promise |
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Frequently asked questions
What does Promise mean in engineering?
A Promise is an object representing the eventual completion or failure of an asynchronous operation. It allows you to attach callbacks instead of passing them as arguments, enabling cleaner asynchronous code. In Software Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Promise?
Promise is pronounced /ˈprɒm.ɪs/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Promise used in a sentence?
Example from an engineering context: “When the data fetch completes, the Promise resolves and we update the user interface with the results using the .then() method.”
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