Future
Noun · Development
Definitions
A placeholder for a value that will be available at some point in the future, representing the result of an asynchronous computation. Called Future in Rust/Java/Dart, Promise in JavaScript, and Task in C#.
In plain English: An IOU from your program — it says 'I don't have the answer yet, but I will eventually, and you can keep doing other stuff in the meantime.'
Example: "The function returns a Future<User> — you await it when you actually need the user data."