A first or preliminary version of a device or vehicle from which other forms are developed is called Define Empathize Test Prototype

The term you're referring to is "Prototype". A prototype is a preliminary version of a device, vehicle, or any other product that is created as a model for future forms or versions. It is used for testing and refining the design, and it helps in identifying any issues or improvements that can be made before the final product is developed.

The process you mentioned, "Define Empathize Test Prototype", seems to be a part of the Design Thinking process, which includes the steps: Empathize, Define, Ideate, Prototype, and Test.

1. Empathize: Understand the needs of the user.
2. Define: Define clear project goals.
3. Ideate: Generate creative ideas.
4. Prototype: Create a preliminary version to test the idea.
5. Test: Test the prototype and refine it based on feedback.